dmwnc1959 said: "In regards to the show's playlist, when does Act 1end, and what song starts Act 2? Just want to get an idea, that when I am sitting at the show, when to anticipate a dash off to the souvenir stand and restrooms. Thanks!:)"
My recommendation: when you enter the venue, ask the ticket taker at the door where the merch booths are. I have seen Hamilton in three different cities and they almost always have more than one location. The one closest to the entrance usually has the longest line, but sometimes one booth has more items.
I would really recommend that you arrive early and buy your merch before the show and then you can save intermission for running to the bathroom. It’s possible you won’t have time to do both because the lines for the bathroom and the merch booth are usually long at intermission.
For what it’s worth, some tour stops have a Hamilton backdrop to take photos but the line is long so that can add to your list of things to do.
Some of this will vary on the layout, staffing, and traffic control of the venue. In Las Vegas, I waited about 15 minutes to take a picture in front of the official backdrop. They had one merch line that was parallel to the photo line and it took about as long as the photo line (and they had multiple cashiers). In San Francisco, they didn’t have a photo backdrop anywhere inside, but they had six huge signs on the outer walls of the building so it took us maybe two minutes to choose one, wait for other people to finish taking their pictures, and then jump in. In San Diego, they had three merch booths and the line was longest at the upstairs one which had the most cashiers, but even that one was less than five minutes. They also had a merch booth set up outside the venue with only two cashiers that had no line at all when I arrived.
But having seen all the available merch at three different tour stops, I would just order what you want online from the official merch website. They have everything available there and you don’t have to waste any time standing in line or stowing the bag under your seat during the show. If you buy shirts in person, hold it up to see how big it is. My sister bought a unisex shirt (the bluish grey Rise Up) and only found out after she got home that it was too big. You can exchange sizes in the mail and it was a fairly quick process but better to avoid that if possible!