Lol, it looks like most people who answered didn't actually read the original post, just the title.
But, yes, it is frustrating to visit another lot with part of your household and not be able to leave the ones at home completing whatever you queue up for them.
I have learned to adapt my play to take this into account.
I tend to take the whole household on trips, unless I'm not too fussed about the ones left behind. Occasionally I leave some, but being careful not to do this at night/late evening as it messes up their sleep patterns and energy levels. It's not good to return from a nightclub at 3 am and find your kids still up and about!
I will usually make sure to arrange things for them to do on the trip. So, for instance, if I have a family where the dad wants to go to the gym, I might have a pool there for the others to enjoy. Or mum might take along her guitar or easel to occupy herself and the kids could take toys/a book or do their homework.
