Non-obvious careers in theatre?

I've been dead-set on being an actress my entire life. I know I'll never get anywhere, and just be in the chorus in everything I do, but I'm okay with that! But recently, one of my friends who is extremely talented (in my personal opinion, the best in the world,) doesn't think he has the slightest chance of making it at all and so is not even remotely considering it. My mom and brother never approved of my career choice but I was ignoring them, but now that even my friend can't do it and it's time that I have to buckle down and pick colleges and careers, I'm having second thoughts.

The things is, theatre is quite literally the only thing I'm even remotely good at, and one of the only things I enjoy. So I heard of this thing called dramatherapy (which I looked into, but it doesn't sound like the career for me,) and I wondered if there were any other not-obvious careers in theatre like that.

So does anyone know anything that's not obvious (PLEASE don't say acting, directing, or playwriting. I'll assume that you didn't even read this)?