You can always do the resort ''Booze cruise'' Have done Cozumel and Isla,, (snorkling aside) Isla is a lot more manageable for a day trip. Coz, is so for away I have looked into Helicopter or Cessna trips over there versus taxi/ferry.
Yea my first trip I did a basic BOOZE cruise from an area only 10 minutes from Temptation by bus. This involved snorkeling in two spots, lunch on the island, shopping and beach time. It was fun but more of a relaxing drinking day then a crazy party. Still a pretty long day away (like 9-6). It really just depends if it is worth it to you based on how long you will be at TTR, and if you need a mid-week break.
I get paranoid leaving a topless resort that offers free food and alcohol to have to pay for it elsewhere. Especially with 4 guys.