If I bought seats, but would like to change them for different seats, the same night and play, can I?

You may absolutely exchange any seats right up until 48 hours before the performance (for a total $10 transaction fee) by contacting the box office.

All seating is good. Had seats on the very back, still a great show

I could be wrong but I think you can. I would just call the box office and ask them. I'm pretty sure we've been able to change ours before

I don't think so. The theatre is in the round and there are no bad seats.