You can wear flip flops while walking around Siam Park in Tenerife, but you are generally not allowed to wear them on the actual water slides. For safety reasons, loose footwear is prohibited on high-speed attractions like the Tower of Power or The Dragon, as they can fly off and injure other guests or interfere with the ride mechanics. Most visitors leave their flip flops in the provided cubbies at the start of the ride queues or use the park's locker system. A popular alternative in 2026 is wearing water shoes or "sock" shoes, which are permitted on almost all attractions because they are securely fastened to your feet and provide excellent grip on the often-hot pavement between rides. The park's ground can become extremely hot in the Spanish sun, so having some form of footwear is essential for comfort while navigating the Thai-themed landscape. If you choose to bring flip flops, just be prepared to carry them or leave them at the ride entrance before you begin your descent.