I am not sure if this will catch on in the U.S.
The owners of a traditional "sake house" north of Tokyo have employed a pair of Japanese monkeys to wait on their patrons. Check out the video. It is fantastic.
These little guys move around the establishment with great efficiency and seem to have a wonderful rapport with the customers. I am not sure how sanitary this form of food and beverage service is, but they do wear some very charming outfits.
It is just a matter of time before one of these monkeys gets promoted to working the cash register.