I agree with all of the above. Start with TotT as you will feel safer and secure being in a conga line, make sure you go in the middle so you have someone guiding you in front and behind you. If it all gets to much just close your eyes and hum, don't panic as that'll just make things worse.
I've worked in scare mazes for the past three years, and they're trained to recognise visitors actions and body language. A good scare actor will push you to your limits, but as Lewis said, there's nothing more rewarding than seeing and hearing the excitement and enjoyment of our guests, we don't want to reduce people to tears and panic attacks... Only for extreme experiences
Hope this helps