if i was to purchase a 2 mile trip.. can you float down the river multiple times or do you have to repay everytime you restart?

You pay per trip. If 2 hours isn't enough, you can pay for the 4 hour trip which is what I do every time. There's 3 stopping points and can quit anytime at those pickup spots

Def have to pay each time. We just did the 2 hour trip and that was the perfect amount of time!

You have to repay each time. If you want to tube longer, by the longer trip. 3 or 5 if I remember right.

I do not know. I'm pretty sure the lower green is 2 miles from the fish top access point to the last bridge. You have to be picked up by the company. I would assume it's a one trip thing.