Yes, you don't want to take the risk of no-one else showing up.

You have no idea of how popular gloryhole booths are at this time of the day, so it's better not to take any chances. You log in to the chat room and right away send a public message:

Hey all! Anyone going to visit booths at the sexhop downtown? 18-yo boy here considering to go there in half an hour

Chat room quickly fills with messages along the line "I wasn't, but now I'm definitely gonna visit it!". Few people also send you private messages. You log off and wonder if this was such a good idea after all?