So, when on long vacations to somewhere where you can't get the brands you would get at home, which team are y'all on?
a) I bring my own toothpaste/shampoo/etc from home b) I buy locally
... where "toothpaste" can be extended to lots of other things. You are obviously allowed to be on both teams for different things and/or in different situations, I'm more interested in the what and why.
I usually bring stuff that I don't expect to be provided by the hotel, if I'm staying at a hotel. If I'm staying with friends/family, I'll buy whatever I need since I know I can leave any leftovers and they'll be used rather than thrown out.