Carol-Lynn Smith does an amazing Bermuda island tour. You can find her on FB and communicate with her on F B through messenger. She came highly recommended from "Bermuda Bound" group and I used her in October 2022. She is a retired policewoman, super-friendly and knowledgable. She has a couple people who work with her also. I highly recommend seeing if she is available while you are there.
You are not tied to the original TA. You can contact a new TA, or Virgin directly, and give them the MNVV number and they will be able to make the booking for you. I have done this for people months after the MNVV was purchased.