Can't speak for the actual cave tubing. I was supposed to do that but ended up on a way cool cave hiking excursion instead. What I do recommend is quick dry clothes. You will want some cover for the tubing. The cave that we did had a lot of wading and swimming in it too and quick dry clothing would have been just the thing. I didn't have any quick dry stuff with me, so I wore a t-shirt and some knee length exercise shorts. They worked just fine except for after we were done, I was chilled. If I'd had a change of clothes in a backpack that had been kept safe and dry, though, that wouldn't have mattered. I also didn't need to wear long pants and long sleeves and glad I didn't but bug spray is definitely in order, for there and back. No problem with bugs in the cave that I was in, just on the hike and especially once when we were just waiting around at the beginning and the end of the hike. Have fun and don't worry, everything will work out fine.
[This message has been edited by seashell (edited 02-22-2002).]