I hope to God there will be tons of ARMYs during his performance. Music Festival goers here in the US can be toxic sometimes. A lot of people will be fans of other groups/type of music. Since Hobi’s stage will be one of the closing ones (there are 8 stages in the venue), he will perform in front of a huge, huge crowd of music goers that are fans of performers that came before him, and general admission goers that went from stage to stage sampling other performers.
But knowing ARMYs - a gazillion of them will probably just stay in front of his stage the whole day to get prime spots and watch (and enjoy) all the performers that will come before him to wait for the main event.
Good luck, Hobi. 💜💜.