We just returned from our honeymoon at the Reef Club Playacar in Playa Del Carmen. It was awesome! We have nothing but great things to say about the hotel and the area in general. We did two tours - a Snorkel Express tour which was a few hours of snorkeling along the coral reef and we also did the Tulum Extreme Tour through Maya Adventures that was awesome! It had 2 zip lines (1 into a cave where you landed in the water), rappelled into the cave, snorkeled in the cave, and then had a guided tour of the Tulum ruins. I would highly recommend it. Any questions - let me know - I'd be happy to help.