Few things:
1. Guest stand up all of the time. This includes: sims standing up to order, sims standing up to eat (also includes standing up and putting their food half eaten on the other side of the table) , sims standing up to talk and standing up for no apparent reason at all.
2. No food gets served to anyone but my sim (the restaurant owner).
3. Restaurant wouldn't close at all. Ended up rage quitting the game.
4. Fired Sims still show up for work (WHY?).
5. Random guests keep coming over to talk to my sims, not sure if it was intentional but it would be nice if my sims had a private dinner.