We (4 adults) did the cave tubing in February a few years ago. It is cold when you first get in, but you get used to it. Funny how the same experience is viewed differently. My husband & I hated this excursion, but our friends said it was the very favorite. If the water is low, they will say "butt up" meaning you lift your derriere so they can pull you thru by your legs. You wear a minor's hat with a light for the dark caves, but honestly, there isn't much to see. We barely made it back in time to catch the shuttle, (last one back) so be sure to watch your time if you are going on your own.