The last few holidays I've had I make a point to look up whether the towns we're staying in have any second hand bookshops, and to damn well visit them - with the ever present chance of slight frustration due to some odd opening hours that seem unique to second hand bookstores in such a way as to appear to be saying "you must earn your visit by rescheduling your holiday around me".

It's possible to be correct in three guesses what the owner will look like just by knowing the opening hours.