I will be taking my 2nd trip to Cancun on May 5th, and am wanting some tips on what to do. The last time I was there my buddy got so homesick he wouldn't leave the hotel. This time I am going with a group of friends that I am sure will have a good time. Any recomendations on any MUST-DO'S would be appreciated!! Thanks alot! Also, Will alot be going on for Cinco de Mayo?? We are hoping it will be a good time!!