shoes along with comfortable sweatpants or leggings with short and a t-shirt is most appropriate. you will be getting down and dirty in the cave so make sure that you have clothes that will allow you to stretch and move comfortably.
camera, and a change of clothes.
entrance fee, water, lunch, snack, tour guide, equipment and transportation. some of the jumps felt a bit unfair to me. felt like you needed to leave them in a fairly specific direction, but you can't see where the next piece of track is until you are already in the air and unable to do anything about it. 