Also, the tour guides do not like to let the group separate when officially "on tour". We had someone ask to leave and go back to their room the day we were at California Adventure and the guides said no, she had to stay with the group. She didn't need to partake of what we were doing but she could not leave the group. It's a safety thing. If something goes wrong, the guides need to be able to account for all members of the tour, this goes for in the parks and in the hotels.
If this is the information you are given, it is incorrect.
While you have paid for all aspects of the tour, you are not required to participate in any of it.
Transportation, meals, pre- arranged activities and entrance to certain things are time sensitive, but the rest is up to you.
I have done the Knights and Lights adventure twice and have never gone to Versailles. As I didn't feel I had enough time to do the things I wanted to do it Paris, I have skipped this portion both times.
We just completed the San Francisco Weekend / Backstage Magic combination trip and guests who had taken this trip previously decided to do other things while the tour visited things that didn't interest them.
Many in our group have done Backstage Magic multiple times. As it was raining on the night of our farewell dinner, a large portion of group decided not to go back into California Adventure to view World of Color. This is not an issue.
It's good manners to let your guides know that you won't be joining a certain event/activity, that way no one waits for you...but you are under no obligation to stay with the group at any time.
if you have any questions...please feel free to ask.
Kevin@DreamsUnlimitedTravel.com