Places I spend a lot of time in waiting around and wish there were pinball machines to play:
The DMV
Hair cut place waiting room
Doctor’s/dentist office waiting room
Hole-in-the-wall Chinese food/pizza takeout places
Cool places with a crowd likely to play:
Video game stores (locally owned places, not chains like GameStop)
Amusement parks/fairs
Candy stores
Hotel lobbies(?)