Weell, I dont know of anyplace in Japan as Ive never been but as per your general description of your party members your in the right place . You can prolly go to a resto with geishas, have friend A pig out on the food, Friend B perv at the geishas (although that might be frowned upon greatly) and have friend C take snappy shots at the geishas as they're in their colorful costumes like anime coxplay people