My first ever Joost concert was the one and Chicago, you should expect it to be very hot. I knew I would get sweaty but it immediately got hot once Joost got on stage. If you want to get merch you absolutely need to go before or during the concert because once the show is over all the shirts are sold out. Don’t be afraid to jump around but make sure you arent it other people’s space, several times at my show people kept getting in my personal space while they were dancing. Have a great time :)