Back in 1990, when there were only five Star Trek movies out, a theater near us had a special Saturday event called "Sit Long and Prosper", showing all five movies. It was amazing. A "normal" 15-minute break between the first two so people could hit the bathrooms, grab something from the concessions, etc., an hour between II and III for dinner, then back for IV and V with a 15-minute break between those two.
Another draw was the first official trailer for ST VI. When we saw "This is Captain Sulu of the USS Excelsior" the place went nuts.
Anyway, it was really cool seeing them on the big screen again like that, especially II-III-IV which form a trilogy of sorts. After IV, we were getting pretty tired, and wife wanted to leave. She's also not big on ST V (most aren't), but I kinda wanted to stay for it anyway, partly because I don't hate it like so many do, and partly because we'd paid for the whole thing, so on principle I wanted to stay for the whole thing. But she pointed out that our dog had been inside for close to nine hours at that point, and we really should try to get home before he has an accident.
We did not get home in time. But it was cool seeing ST:TMP through ST IV on the big screen like that.