Group Chats? Solo DC N2

Hey guys, ik this is super last minute but I haven't been able to get into any group chats for peeps going to the DC shows. I have a GA not vip ticket and I have no idea what time I should be getting there. Also I heard if you have a coat that the coat check line is crazy. I've never been to a concert with a coat check so I zero idea what that means. Any gcs I could join? 😭🙏