I'll help if I can. I work in a small grill and espresso bar. We have about four to five people working at any one time, including the owners. However, we're part of the food court in an upscale farmer's market so we take orders at the counter, not the table.
Our cast of characters includes the owners -- kind of Yuppie-ish; me, a writer; a single-mom whose boyfriend is in and out of jail; a retired guy who's motto is "I'm just here to work ..." and a couple of teen-age boys with whom nothing is intuitively obvious. Such as, food must be cooked clear through before serving
One of the most fun things is when the owner is working on product development or trying to decide between two different products: "Here -- taste this." That can be fun
One rule of thumb about cash flow was that labor costs should be equal or less than 30 percent of the cash in. We're tight and as the seasons change and traffic patterns change at teh farmers' market, we don't know where it's going to end up.
The owner, Nettie, has an inventory sheet and makes regular orders from a restaurant supplier. But she also buys at Sam's and the grocery if she can get a better deal. Bulk frozen foods are delivered weekly. So are breads and rolls. A linen service takes care of all our dish towels, picking up once a week.
This is a small, low-volume restaurant.
Hope that helps. Probably others know a lot more.
Ann
PS -- We have a fry station and two grills. I never pictured restaurant stuff breaking down, but one side of the fryer doesn't work, we had one grill catch fire twice and the espresso machine had to be propped along for weeks until a part could come from California. That was frustrating.