Hi Michael, actually apart from #12 and #43 which are overnight star trails, only #7, #10, #21, #25 and #29 are shot with tripod. The rest are all quickly shot and gomost of the shot are slow shutter, time to setup tripod etc...you have a good partner who is willing to wait for you.
Haha that's absolutely true. In my first few years I used to shoot quite slowly and as you mentioned, opening tripods and slow shutters. People would get frustrated from waitingrun out of patience, and u better behave yourself....LOL