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Is it true that there is a makeover type spa for kids at GKTW?? If so I may think of cancelling the one at Downtown Disney.
Where is the best place to get inexpensive souveniors? or where is your favorite place for souveniors???
Yes, there is a "spa" in the Castle now. When you go to the check-in center, there will be a book that you can schedule your session. We didn't have a chance to do it, but I know they advertise nails, hair, tatoos, massage and a photo session. Sounded fun!
Walmart is the hands down cheapest place to go. Their Disney section is quite large. There is also a Target very near GKTW that sells Disney stuff. There are a number of cheap touristy type stores on 192 right by GKTW that sells some Disney. (Probably knock-offs) There is a Disney outlet store really close as well. The "Bunny" book has been replaced with a new GKTW book, updated in March. There are directions in the book to get to a number of stores in the area.
The GKTW Guide was our bible on the trip. It gives very clear direction to all of the parks, in addition to some other attractions, stores, and restaurants. After memorizing the front section that talks about GKTW, I kept the book in the van and referred to it often to get around.
By the way, someone mentioned that the Parents/Kids Night Out has been cancelled. If it was, then they brought it back.

It is on two nights. We did not use it. Although this isn't the reason that we didn't use it, I did notice that your child has to be able to communicate in order to stay, as well as being potty-trained. You need to sign up in advance for this, as well.
Hope this helps.
Tammy B