Staying healthy while on vacation?

merisendabills

I'm going to be visiting family in Mexico next month, and I am anticipating some difficulties dieting. Mexican food is so good but can be incredibly unhealthy. While I think there will be healthy alternatives, I feel it will be so hard to say no to a lot of things. I still plan on being active (climbing pyramids and such) but worry about the diet part.

Anyone encountered a similar situation like this?