True, he does also play guitar, but think of all the other guys that do that without using a water bottle with a tube. I'm not saying it isn't a good idea to save a few seconds between songs if you're tight on time, but it's funny to watch. Personally, I would feel awkward using it.
And yeah, it is the venue's fault, and they always do that. Usually they book two locals for every show, so when a tour with 4 bands comes through the show ends around 1:30 am. It can be annoying, but luckily this show ended before midnight. This time I was just annoyed because the venue didn't list the band on the site, so I was expecting Saxon next, only to have to wait another 45 minutes.