Look at your concert and see if there's an opening act if there is generally it's an hour before the show starts that you can get in. no assigned seating means it's all general admission they usually have seating in the back area.
You can go in before the show and probably grab a drink but I'm guessing they'll be letting people in at 8.
Hello Dave, doors will open at 7 PM for an 8 PM show.
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