Kay, look, if you really want to go this far, do it right.
Georgie White was rumored to have had a bar boat on her trips. It was (of course) a big assed pontoon, but it had a full blown bar on it, including the bar tender/guide who ran it down. It unfolded out and up, and when they were done it was a fully stocked bar, complete with ice maker and beer taps. never saw it myself, or saw pics of it, or even talked to anyone who actually attended; this was all rumor. That said, if you're going to do much more than toss a case of beer in the boat and go, you might just as well go overboard (pun intended)
Now, for you "sophisticated" types;
and for the more rambunctious types;
and even for yakkers............