Sensitive issue here but....looking at the half day Colorado River float in Sept. Looks to be about 5 hours which I know would include transport to and from. I drink a TON of water, therefore, I go to the bathroom a lot. I really hate asking this question but it will determine if I book this trip. Obviously there are no bathrooms once you get on the raft and apparently the water is FREEZING. How long is the actual float itself and are there restrooms right before you get on? I certainly would not want to wait 5 hours but I could 2-3 if I don't drink as much.