In 2026, Siam Park (Tenerife) operates primarily as a cashless environment for your convenience and safety while in the water. While you can pay for your initial entrance ticket with cash at the front gate, most in-park transactions—such as renting lockers, buying food at the Beach Club, or purchasing "Fast Pass" wristbands—are done using a pre-loaded waterproof wristband. You can "top up" these wristbands at various stations using a credit/debit card or cash. At the end of the day, any unspent balance on your wristband can be refunded to you. This system is designed to prevent you from having to carry a wet wallet around the slides. In 2026, digital wallets like Apple Pay and Google Pay are also widely accepted at the gift shops, but for the actual "water zones," the wristband remains the most practical and supported payment method.