Cozumel's beach clubs run on a model that is unusual outside the Mexican Caribbean, and getting it wrong costs money. There are three variants on the island, and Mr Sanchos is the purest example of the first.
1. The all-inclusive pass. One price per person for the day. It covers the buffet, the open bar, a lounger or palapa, pool access and the restrooms and showers. Adults pay the full rate; teenagers pay a reduced one; younger children pay less again, and very small children are usually free. Adult rates here have generally sat somewhere in the region of US$70 to US$90 with the teen and child tiers stepping down from there, but this is a band rather than a quote and the club revises it — confirm the current price before you book.
2. Entry plus minimum consumption. A small entry fee, or none, with an obligation to spend a set amount on food and drink. Paradise Beach and several smaller clubs use this. Cheaper for light eaters, more expensive for a family that grazes all day.
3. Free entry, buy what you eat. Money Bar, Playa Corona and most of the small shore-snorkel places. You pay for a chair or a meal and nothing else.
What is not included in an all-inclusive pass, here or anywhere on the island, is the part that catches people out: motorised watersports, horseback rides, massages, photographs, lockers and, at several clubs, towels. Budget separately, in cash, in pesos.