A 'vault' toilet is a non flushing toilet. Imagine a toilet seat over a big hole in the ground.
I'm not sure about the shooting range, I've not been shooting since my Army marksmanship qualification days.
Last year the kayak trips that were planned were:
Alexander springs run - wide easy paddle
Juniper Springs WMA paddle - Longer and tighter paddle
Silver River Paddle - This paddle was up stream, but well worth it. I think we saw at least 100 monkeys.
I haven't heard from ItsAndy but I suspect something similar is planned this year.
Hope that helps!