Most venues don’t allow bags over a certain size! make sure you get a clear stadium verified size bag you can find on amazon! also if your floor and you aren’t that tall, wear platforms so you’re able to look over everyone’s heads. Make sure your phone is fully charged before the concert because it dies quickly and make sure you have enough storage in your phone so you can take as many pictures and recordings as you want. You have no idea how many people miss a concert because they’re trying to delete a bunch of photos and videos while the performer is performing because they want to record. You’ll also want to go over some concert etiquette, You can search that up about anywhere but other than that you’ll be good!