It’s not a “chat” so there isn’t a notification. It’s the whole “what size tshirt are you” option and you can make that text box whatever you want, AND make it public. So anyone signed up fills it out and anyone that can see who’s signed up for a session can see their response. 

No, you can make it public. That way everyone that signs up can see when other players are coming.

I added a text input option "What time are you showing up" to all open play sessions. This has helped A TON.

This would be awesome. We really don't want to have a chat for the whole facility but session specific chats would be awesome!