Hi Jennifer!
How exciting that you'll be at Walt Disney World by this time next week!
Disney's Keys to the Kingdom Tour is fantastic! I just enjoyed it myself for the first time about 3 weeks ago when my husband and I took our first 'adults only' trip to Walt Disney World!
Although you certainly can chance waiting until next Wednesday to sign up
(you'd visit the Main Street Chamber of Commerce building on the left hand side after entering Magic Kingdom - right next to City Hall to do so), I'd highly recommend that you consider reserving this very popular tour in advance. On Sunday, September 29th the tour is scheduled to take place at 8:30am, 9:00am and 9:30am. We did the 9:30am tour on a Wednesday and it was full except for 1 spot. The earlier departures might be slightly less busy.
If you decide to book before you go, call (407) WDW-TOUR or 407-939-8687.
I hope you enjoy the Keys to the Kingdom Tour as much as I did Jennifer!
If you have additional questions prior to your departure, please feel free to write me back. I'd love to hear from you again!
Wishing you a simply Magical time at Walt Disney World with your Mother!
Kirsten