My wife and I are staying at Westing Lagunamar for 4 nights. Nothing to crazy. Xcaret, snorkeling, beach activities. Possibly dolphins, but dropping $100 for 20 minutes a person isn't really appealing. Renting a boat for 4 hours and a jet ski for 2 is appealing. Mayan ruins isnt that interesting. Adventurous stuff sounds good also. Hiking, trails, and other stuff.

I hope this gives a little bit of direction.