Okay so I tried restaurants.
First I Dined in:I first should point out this was in a vanilla save with no mods or cc at all. I also used a vanilla Maxis build of the Chez Llama for my tests. The version that shipped with the Dine Out pack with no modifications that I downloaded from my library, Everything worked as expected.
- I requested a table and was seated.
- I ordered a drink, a meal, and a desert. All were delivered and my sim was able to consume everything.
- I even asked to "bring out cake". Once I remembered to remove the candle from the center of the table in build mode that worked as expected too.
- I was able to pay and leave without a problem.
But as you stated the chef (Dennis Kim in this case) did stand outside. He was out there when I arrived and remained there until I ordered food. Then he came in and cooked and performed as expected. (Edit to add:) All the other employees were in their expected places and performed as expected immediately upon my arrival.
Then I bought and ran a restaurant:I bought and ran the same vanilla as Maxis shipped it version of Chez Llama in the same unmodded, cc free vanilla save.
- Once hired my staff arrived immediately upon opening the restaurant. The chef again (this time a random townie) did stand outside again for a bit while a pan appeared on the stove and began bubbling away. But once the first customer placed an order she came in and took her place at the stove and remained there cooking as expected.
- The waitress and hostess also performed as expected delivering food and show guests to tables.
- I was able to perform all managerial functions in the social wheel just fine, but not well because I hadn't played with the owner side of restaurants in ages and now I am kicking myself because it's loads of fun.
You should make sure you have removed all your mods and cc and deleted your localthumbcache file. This patch broke tons of mods including MC Command Center which won't be fixed until Friday or later as Deaderpool is on vacation this week. Overall though I found restaurants to be working fine except the sluggish chef, but that doesn't seem to be an obstacle to overall functionality in a vanilla save with a vanilla restaurant.