Tough to get older than Theatre Charlotte.
No, they don't have the grandeur of the Belk, and there isn't even the intimacy of the Booth - on the outside it doesn't look like much more than a house, which is why you can miss it so easily (I have done so many times).
Even once you are inside, the lobby doesn't look like much more than a living room. But past the doors, there is a nice-sized space, and an ample stage, with an impressive array of workmanship backstage as well.
The downside is that there is not a lot of parking right there on-site, so you may have to park on the street - or even across the street and hoof it to make the showtime!