I was wondering if you would lend me your expertise... I'm heading to the Yucatan Peninsula with my boyfriend next week. It's both of our first time going to Mexico. We're going to be staying at the Catalonia Riviera Maya and would like to do a few of their tours to the ruins. What type of shoes would you recommend we bring to wear on these tours? I'm unsure how much hiking/climbing/etc. we'll be doing. Bf is thinking about tennis shoes. I was thinking of a pair of sturdy sandals I have (similar to Birkenstocks) but am not sure. Any advice would be appreciated! Thanks!