Gosh working there for four moths I have lists of disgusting things I've seen.
Not the worst but one as an employee of the attraction made me cringe was when I saw a toddler teething on one of the Agent P phones. Also saw one kid stick another phone down his pants. Some CMs always complained that we over sanitized the phones and after I saw those two things happen (as well as getting snotty phones back or crusty ones back from food or unknown substances) I never complained about cleaning then again.
As a CM I also saw people peeing in public because they were drunk at F&W and didn't want to wait in line.