We were in RZ last night for DC night 1. As others have said, the bar disappears before the show starts, and the RZ section is further off to the side than on prior tours. This section also felt smaller and more crowded than on prior tours. So this was not my favorite RZ experience. But, I still greatly prefer RZ over GA or seats. You’ll have a great time.
As for admission, RZ always has a separate entrance at the Arena where you check-in, present ID and get your tickets and wristbands. For DC, you could start checking in at the RZ entrance at 5:45, I think. Doors opened at 6:30 for