Hey there, tkdgirl! I consider pocket-riding an honor.
Happy to come along!
It's probably the unknown aspect that's got you nervous. Even starting with a new T after having spent a period of time working with someone else is a bit unnerving, because they all work somewhat differently.
Keep in mind, though, that this is actually a job interview:
You are interviewing the therapist, deciding whether you will retain this person to work with you. You get to ask questions too, all you want. If you feel yourself getting really uptight, ask (for example) whether T has ziplined over the jungle?