Hi Amanda!
It sounds like you've already got a great plan in place for your family's amazing Walt Disney World vacation!
Bibbidi Bobbidi Boutique is an absolute must-do for girls your Little Princesses' ages! They'll just love their Magical transformations. Be sure to have your camera ready. They'll be all decked out and ready to
become their favourite Disney Princesses or Pop Stars for Mickey's Not So Scary Halloween Party that night!
With 6 full days in your schedule, plus partial days on your travel days for a bit of rest or pool time, I think you'll find you can easily fit it all in without overdoing it ... but you know your own children best!
With your one day off-site, a day of shopping (I'd highly recommend a visit to
Downtown Disney for that!) and your special events and full day and evening at Magic Kingdom on the 25th, I think you'll still be able to fit in that extra day at
Disney's Hollywood Studios and enjoy it
all! Your girls will love Beauty and the Beast - Live on Stage, Voyage of The Little Mermaid, Toy Story Mania! and the Disney Channel Rocks! live and interactive street show.
If you have any more questions about scheduling in all the fun you can, without overdoing it of course, I'd be more than happy to help answer additional questions you may have!
Wishing you a simply Magical time planning for your visit to Walt Disney World Amanda!
Kirsten