This isn't really a bug, but it is a huge annoyance. I recently received an adventure in Egypt where I had to find a library hidden under someone's house. Problem is, both residents are shopkeepers, and of course the shops are open 24/7, so now I can't complete the quest.
You might try going into Edit Town mode for that vacation neighborhood. Move the shopkeepers to a different house and place another family there.
Hey, good idea. I'll try that. I also tried searching for a mod that made the vacation shops open not-24 hours a day, but it either doesn't exist yet or I'm just blind.
Thanks for the tip though. I'll check back when I have a chance to test it.
EDIT: Worked like a charm! Thanks!