I haven't gone, but I went to www.kidwinks.com (the only place I go for birthday party ideas as well as where to find local activies for the kids) and searched for Sweet and Sassy and only one review came up and that was for the Chicago location.
Here's what that review stated:
My daughter had a birthday party here. All the girls had fun getting their nails painted, their hair done up, and light make up put on. Then they had fun dressing up and doing the runway. Great time for girls of all ages. The only downside was the place was a little crowded with two parties and others using the salon services. The party room was a little tight fit.