Bio-degradable sunscreens are the ONLY sunscreens allowed in Riviera Maya. You can buy reef-safe sunscreens online beforehand. Some health food stores may carry reef-safe sunscreens, but may not be widely available. If you attempt to buy at the resort it will be extremely overpriced.
The popular a la carte restaurants tend to fill up quickly, especially on weekends. Get your reservations set as soon as you arrive to guarantee seats at the resort's best dining options!
Each restaurant will typically have its own dress code.
Casual places may allow flip-flops and swimsuit coverups. Meanwhile, nicer restaurants may require dresses, collard shirts, or dress shoes.
Do your research, and dress appropriately.