This video inspired me to do the same in a BK with the same configuration. Basically with few people there, very far back from the counter in kind of a 'private part' at the north end with a barrier going part way up. It wasn't much of a problem because as I was cumming I was low from being 'weak in the knees'. The biggest giveaway was my mouth being wide open having a full body orgasm right there. Fortunately no one was paying any attention and with people being so stupid nowadays, probably wouldn't have realized the sexually explicit actions of a horny man in the throes of passion ejaculating out a load of sperm anyway.