Since I originally I opened this topic, I have done scare mazes at both Alton Towers and Thorpe Park. For anyone who is in the situation that I was in, I have a few tips and advice for anyone wanting to brave the mazes that have probably been said already but helped me.
If you're going to try one for the first time, go for a maze with a conga line, non contact aspect. I know it's pretty obvious but you won't get the intensity as you would with a full contact, free flow maze
If you're going for mazes which don't require purchasing a ticket for, I would strongly recommend going for a short queue. It's like with anything, if you're in a long wait for a ride, your nerves will be building and will question is it's worth it or not (which they definitely are). During my first maze experience, the Maze was e-stopped which extended the wait even longer for me which did make me more nervous and anxious.
Go for a maze when it first opens, given it is day time, the Maze won't be as scary to go in. Plus most actors are still getting into the swing for the day and won't be in full form as they would on the night when the experience is more scary.
Most importantly. They are just humans like you and me. They won't hurt you. Nothing bad is going to happen. It's just a bit of fun. They are meant for excitement and adrenaline like any other ride you would go on.
Just sit back, let the actors do what they need to do. Don't be alarmed and enjoy the experience. Some of the mazes I've been are such great fun and provide a real rush. I would definitely recommend them. Hopefully this helps anyone who is on the fence about doing them