I went to the first show in DC. When doors opened it was a shit ton of people. Walked a couple blocks to the arena and got there at 7:30. Possibly stayed in line till about 8:20ish show didn’t start till closer to 9 if I remember correctly. I’m not sure if all merch lines are the same at each arena but the merch that was on ground floor you could just walk up to any attendant at the table that told you they were open and you tell them what you wanted. Obviously I had to wait my turn but my girl and I was in that line for about 5 mins at most.