Hi Amanda -
There is no place in the Disney theme parks where they will do French braiding. There are a couple of other hair decoration options - let me describe them and maybe we can figure out what your friend was talking about.
The
Bibbidi Bobbidi Boutique does princess-style makeovers for girls ages 3-12. The "Fairy Godmother in Training" stylists will put the hair into a bun and then embellish with colorful clips or streamers.There are two locations: one in the Magic Kingdom and one at Downtown Disney. Prices ranges from about $50 to about $200 depending on the package chosen. (The more expensive packages include dresses and photos.)
There are several Hair Wrapping stations located throughout Walt Disney World. Hair Wrapping includes decorating a small section of hair with beads and colored string. Prices vary depending on hair length, but this typically costs about $25. You can see photos of this on the independent website TouringPlans.com http://blog.touringplans.com/2012/10/11/hair-wraps-at-walt-disney-world/
There are also some full-service salons at Walt Disney World where a girl could have her hair styled. (At
the Beach Club, for example.) These are like beauty parlors at home. They may be able to do braiding, but do not typically embellish with ribbons.
I hope one of these is the service you're looking for. We'd be happy to answer additional questions. Please let us know what you need.