There is not a boutique on board. The last time we were on the Magic, back in 2010, they did a princess makeover for the kids. They closed down the Mickey Mates shop early and allowed the girls (2 at a time, get makeovers.) However this was in Russia on the night of the ballet and princess excursions, so I am guessing this was a one of a time occurance and not a new feature on the ship. This is also something they most likely will not offer on a 4 night cruise. There are a few offerings for mini manicures for pre-teens offered in the spa. They usually have hair braiding services offered ob the top decks.
When my daughters were younger they enjoyed dressing up. They got lots of extra attention at dinner and from the princesses. So this is really not out of the norm to see kids in princess dresses and pirate gear during pirate night.
We have done fishe extenders on our last 2 cruises. The kids love them and keep asking me if we are doing them again this year. My older daughter (14) wants to help me make something, since I am kinda crafty and enjoy making gifts. But I have not seen any mention yet. Maybe that is due to so many firest timers on board, so I will explain it and if that is someone folks are interested in I will be glad to manage it.
Basically a fe (fish extender) exchange is a small gift exchange. Those who chose to particpate are assigned a night (or some prefer to give anytime during the cruise) and leave a small trinket/gift to the other participants. The gifts can be store bought or hand made. There is a huge variety of want can be given, we have recieved things such as stickers & candy. As well as location gifts, such as a bottle of sand from the florida folks, small bottles of rum and tobasco. Picture frames, notepads, ornaments, magnets for the door. The list goes on and on (There are several threads dedicated to gift ideas). You can give gifts as Kids only, Adults Only, whole family, each individual. The opions vary as much as the gifts. The idea is mainly to have fun as it is not meant to cause to much stress of worry.
Julie