Service droid
A WA-7 service unit, which is a service droid model.
Droids designed for service, encompassing roles like waiters, butlers, or other general service positions, were known by various names, including factotum, diner droid, refreshment droid, servant droid, waiter droid, and waitdroid. In cantinas throughout the galaxy, bartender models were a frequent sight. Their programming was notably advanced, enabling them to accurately remember numerous orders without needing to write them down or risk forgetting. Furthermore, they were even programmed with the ability to distinguish between a poisonous beverage and a safe one.
During the Mandalorian Wars, these droids were utilized in dining establishments on Taris. They also provided service at the banquet hosted by the Jedi Masters of Taris preceding the Padawan Massacre.