Thanks, everyone for your PMs on this. I've let everyone know what the current status is, and what our next step will be. We will choose from those who have already responded, so I don't need any other responses.
All of you stoners can keep posting. Most of what you've said just underscores why I didn't invite you along.
Funny thing about what different people consider to be essential on a river trip. Obviously, for some it is pot. For others, it is alcohol. I remember in the '70s, a lot of people considered nudity to be necessary. Some other perceived "essentials" include hiking, climbing, photography, musical instruments, singing, competitive cooking, beach volleyball, and I'm sure the list could go on and on.
I'm okay with most of these things, but drunk, stoned, and naked are things that don't amuse me. Well, unless you're a hot chick with a dynamite body.