Hi Jennifer!
The
Bibbidi Bobbidi Boutique is an awesome experience for young girls ages 3 and up! However, it's an expensive experience, though every parent I've talked to who has done it for their child has said it was worth every penny. Unfortunately, I have never experienced this myself as a parent, because I only have boys. However, I can tell you that the parks are full of young princesses walking around after being transformed by the Bibbidi Bobbidi Boutique. I definitely would not have her change! This is her chance to be a member of royalty and interact with Disney Princesses!
In fact, I recommend that you experience a Character Dining experience after the transformation! Two that come to mind are enjoying a meal at
Cinderella's Royal Table in Cinderella Castle in the Magic Kingdom and
Princess Storybook Dining at Akershus Royal Banquet Hall in Epcot. I think that could easily be a top childhood memory. Just be sure to get an Advanced Dining Reservation (ADR) if interested, as these two restaurants are very popular. ADRs can be made up to 180 days in advance.
You should also take this time to visit the Princesses in the Toontown Hall of Fame in Mickey's Toontown Fair in the Magic Kingdom. The princesses are on a rotating schedule so ask a Cast Member before you wait in line if you are only interested in meeting certain ones.
Have a magical vacation!