Combing through stuff from our 2015 trip I found tickets to the Chateau of Villandry, which we had to skip because of a transportation strike. The date sold is printed on the back, but I don't see any expiration date. (Actually, now that I look closely, it's 2 months earlier than the date we actually bought them, which adds to the mystery.) In any case, they're unused and I'm not sure if I should toss them out.
Does anyone know if they expire after a certain period of time?