Just enjoy it. I went last year. I already new alot of what we were shown on main street especially the windows of main street and other things (I don't want to give to much away). I wish I could remember our guides name. She had a very strong english accent. Her husband also works at MK and when we went "backstage" he accidently sprayed me with a waterhose. He meant to spray her but got me. So if you get her you may want to say something and see if she remembers that. I am sure you will find out some interesting things you didn't know before. I did and I have been going for years and thought I new pretty much everything.
I had a great time.
Please let us know how it went.
P.S. Just to add that we had a good laugh about being sprayed and it was no big deal. I have a unique memory of my tour that no one else will probably ever have.