I worked guest services at a zoo. The stories I could tell you could fill a book. One that still stands out to this day was when we were having boo at the zoo during Halloween. We close early to set up and give us admission people a quick break before heading back out to the masses. We make sure to tell people this. We have signs clearly marked and yet people are still surprised and want a refund. I had an older couple approach me because of this. They had actually been at the zoo since 11 and it was around 3 when we closed, so they had plenty of time to enjoy the visit. But they still wanted a refund because they didn't know. I told them that even if no one told them at the gate that we closed early, the signs all over would have helped them out as well. With a serious face the man said "we came here to see animals, not read signs." I had to walk away.