France's largest water park, O'Gliss Park, has broken all of its attendance records this summer after a sustained heatwave drew tens of thousands of holidaymakers to its site in the Vendée department of western France.
The eight-hectare attraction, situated between the town of La Roche-sur-Yon and the coastal resort of La Tranche-sur-Mer, gained 20,000 additional visitors over the summer season. Daily crowds reached the park's maximum capacity cap of 5,500 people, forcing management to restrict admission strictly to guests with advance reservations.
The inner workings of the resort were documented by a camera crew from French national television channel TF1 for its weekly news magazine show Sept à Huit, which also aired the report on its TF1+ streaming service.
Morning rush for sun loungers
Each morning before the gates open at exactly 10:00 am, staff prepare for an intense rush as thousands of waiting visitors gather outside the entrance. Senior seasonal employee Tonton Bruno explained that the final five minutes before opening bring heavy pressure on the workforce, comparing the arrival of guests to a sale day rush as holidaymakers race across the grounds to claim sun loungers.
The park provides 1,000 sun loungers for an average daily attendance of 5,000 visitors, creating intense competition for prime poolside spots. One family from Picardy in northern France, who return to the water park every year, described how difficult it is to secure seating due to the vast crowds. The father noted that their family specifically seeks out loungers positioned in the shade and close to the ice cream stands.
Other holidaymakers travelled from further afield, including Virginie, a hairdresser, and Arnaud, a maintenance technician, who arrived from Brittany with their 14-year-old daughter Mélina and 10-year-old son Hugo as part of a week-long motorhome trip in Vendée. Their day out cost 140 euros, comprising three adult entry tickets at 37 euros each, one child ticket at 29 euros, and a locker rental fee of five euros. Upon arrival, guests receive payment wristbands that allow them to make purchases throughout the park without cash.
Among the key attractions tested by visitors is the Turbo Lance, a slide measuring 13 metres in height, equivalent to a four-storey building, which features a final slope that drops almost vertically.
Safety enforcement and slide height limits
To oversee the complex network of 20 water slides, 30 aquatic operators work across the resort under the direction of Faustine, a 22-year-old newly qualified English teacher. Faustine maintains strict safety protocols among the seasonal staff, reminding operators during August shifts that pregnant women are permitted only in the swimming pools and emphasizing that safety staff have both the authority and responsibility to deny entry to non-compliant visitors.
Operators are required to enforce strict height limits established by slide manufacturers to ensure rider stability. Children must measure at least 1.20 metres to ride major slides, preventing small children from being unseated or thrown off course by speed and centrifugal forces.
Height enforcement frequently leads to tense exchanges with parents. During the TV report, one father argued with staff after his son was turned away from a slide, claiming that he had only attempted the ride because he believed his son reached the 1.20-metre mark and would not have joined the queue otherwise. Faustine stood firm and refused to allow the child onto the slide.
Outside the gates, frustration also builds when the venue reaches maximum capacity. Site manager Fabrice is tasked with directing traffic queues stretching back over several kilometres. Once the daily limit of 5,500 guests is reached, unbooked visitors are turned away at the entrance, including one couple who had completed a three-hour drive from Bordeaux in southwestern France.
Founding of the water park
O'Gliss Park was established ten years ago by founder Michaël Thibaud, who is known on site by the nickname the sheriff. Raised in a working-class family as the son of a slaughterhouse worker and a seamstress, Thibaud began his career as a lifeguard before taking on 90,000 euros in debt to invest in commercial trampolines. In 2002, he launched the first treetop adventure course on the French Atlantic coast.
Reflecting on his career path, Thibaud said that nothing in his background indicated he would become an entrepreneur. He recalled working non-stop seven days a week on just four hours of sleep per night during his early business years, describing his intense work ethic as a personal passion that continues to drive him today.
When Thibaud built the water park in the rural Vendée countryside, 30 minutes away from the nearest beaches, sceptics doubted the project would succeed in a secluded location. However, the venue experienced rapid financial growth. Admission tickets currently account for 78 percent of total revenue, catering generates 20 percent, and souvenir shop sales have increased by more than 148 percent.
On busy summer days, the park generates 200,000 euros in daily turnover. Thibaud reinvests 60 percent of profits back into site developments and new attractions. To increase spend per visitor, the park introduced a premium skip-the-line option for slides. The fast-pass feature is available exclusively to guests renting VIP private spaces, ranging from 120 euros for a six-person cocoon to 210 euros per day for a private cabana shaded by palm trees. These VIP packages yield high profit margins and grant guests early entry to the park at 8:30 am, an hour and a half before public opening.
Catering operations and food demand
Feeding thousands of daily visitors requires a large-scale catering operation led by head chef Jérémy. The kitchen functions like a commercial supermarket, receiving five to six supply pallets per day with orders placed seven days a week to feed crowd numbers equivalent to a small town.
To maintain culinary standards, management hired Manu, a professional crêpe maker, rather than relying on temporary seasonal workers. Skilled crêpe makers remain in short supply across France, even in traditional regions such as Brittany. Manu explained that few workers choose the trade because of the intense physical demands and rapid pace required in the kitchen.
Daily food consumption at the resort includes 1,000 sandwiches, 900 paninis, 300 burgers, and 200 kilograms of chichi churro batter distributed across 16 automated vending outlets. At the table-service restaurant O'Grill, guests can purchase a plancha menu featuring three marinated meats, a starter, and a dessert for 27 euros. Upgrading the food quality helped raise the park's online customer review score from 3.9 out of 5 last year to 4.7 this summer.
Power outage and extreme rides
The resort's main attraction is The Stingray, a slide standing 26 metres tall with 640 metres of descent and top speeds of 50 kilometres per hour. Capable of handling 1,200 riders per hour, the structure was previously named the world's best water attraction at an industry conference in Orlando, Florida.
During the filming of the television documentary, an electrical power failure shut down all water pumps feeding The Stingray. Without water flowing through the chute, seasonal operator Lauriane was forced to close the ride, disappointing hundreds of visitors who had queued specifically for the slide. Technical staff resolved the fault after more than an hour, and park management extended opening hours later that evening to compensate visitors for the disruption.
The park also features extreme adrenaline rides, including the Looping Rocket, considered its most terrifying slide. Riders step inside a vertical transparent capsule before a trapdoor opens beneath their feet, dropping them into a 22-metre freefall at speeds of 60 kilometres per hour, subjecting the body to forces several times its weight.
During filming, 18-year-old sports student Lucas, working his first seasonal job at the park, attempted to reassure a trembling teenage girl at the top of the Looping Rocket capsule, advising her to breathe and relax. Intimidated by the height, she ultimately chose not to ride. Another visitor, Evan, hesitated before taking the drop, noting the intense pressure at the top before admitting afterwards that the experience was frightening. Other visitors, including a father and son, opted for the Kamikaze slide, which features a drop equivalent to a nine-storey building.
Looking ahead, O'Gliss Park plans a major expansion in 2028 that will increase its footprint from eight hectares to 25 hectares. The expansion will feature a hybrid land and water roller coaster designed to be ridden in swimwear, which management describes as a world-first attraction.
