What to wear to ruins?

Hi all! Coming down in a couple of weeks and so excited! As I start packing, I got to wondering what type of clothing -specifically shoes - are best to wear to ruins. We’re visiting Cahal Pech, Xunantunich and Tikal (which I know is not in Belize).

We’re taking hiking/water sandals for ATM, but wasn’t sure if those are good for ruins as well? Would something like regular sneakers or Doc Marten-type boots be better?

For pants, are shorts OK, or are long pants better? Workout leggings? Hiking pants? Would love your thoughts.

I’m normally in a dress and Birkenstocks all day on vacation, so wasn’t totally sure what else would be best. We do have rash guards and such for ATM, so should be good there. But any suggestions are much appreciated!