Pigtails & Crewcuts Salon in West Cobb. I know there's also one in East Cobb, however I've never been to that one). The people that work at the salon in West Cobb are wonderful! My son plays there (and gets his hair cut) regularly, and I've seen several of their princess parties. They dress up, model/walk the red carpet. Looks pretty cute too me, and they seem to have fun. Don't know how much the parties cost though, as my son isn't old enough for the pirate party yet(the little boy option). Good luck.
https://www.pigtailsandcrewcuts.com/birthdays.aspx