I went on two company sponsored trips (3 days each).
1- puking in your bed sucks, especially when its nearly a whole bottle of tequila, which, was the third of the evening. At LEAST puke outside the door
2- hit up the "city" and the adjacent (connected) clubs, and the others around it. Big tourist and hot local spots. Most of the people don't "dance" because of all the gay fucking shows going on.
3-Hotels will NOT let local girls (mexicans) into the hotel for party time...sneak em in.
4- You have to sneak in your own booze.
5- ITS FUCKING EXPENSIVE, bring your own asprin etc.
6- If, you are escorting home a drunk friend (like I was) and he is PISSING on the road, and subsequently you have 8 POLICIA surrounding you, keep repeating "We need a Taxi, but NO DINERO, Taxi, but NO DINERO, our hotel is around the corner, NO DINERO!!!!"
Have fucking fun...man cancun is a trip.