actually, we had no problems at all

the food was excellent and although we ate everything we liked, we felt well all week
As to the things you should do while being there - we strongly recommend swimming with dolphins! Believe me, unforgetable experience! and of course, Chichen Itza!
What is more, the good idea is to rent a car (or find mexican friends there

, so that you could visit real mexican areas in Playa del Carmen or Cancun and see a real Mexico, not just places for turists. We were absolutely impressed!
Any way, just don't worry - everything will be perfect. People from Sandos will take care of that

Enjoy your holidays!