While not an inexpensive day, it is a world apart for the beach or sitting at the pool at your resort.
Very good food at the restaurant, the pool is refreshing.
Just watch for dropping mangos which are above lounge chairs.
If you have a group more economical to get a cabana.

My favorite part was walking up the zip line trail to see a lot of monkeys.
Felt like Planet of the Apes.

Worth spending the day.