The oyster example has me wondering if they would have been better off subletting if say split the morning slot with a breakfast place and do a change over at some point. The main objection being enpty booths harm the common's benefit.
One issue is that sharing your facilities with a different business (which probably has significantly different physical plant requirements) has its own set of problems. It's actually pretty common in cities more generally that you have coffeeshops that are closed in the evenings in the midst of a bustling restaurant and bar scene. As I recall, Starbucks actually looked into doing some sort of wine bar transformation…
They implemented in at least one store in a Seattle suburb. I'm not a wine drinker, so I just know they had a flyer for it a few years ago. I don't know if it is still on-going. But your point stands: I don't know that one can flip baristas to sommeliers with a switch at 5:00. So is there a shift change? Employees are trained on both? I dunno, I applaud the thinking, but don't know that it's practical. I should run up to the Woodinville SBUX sometime and see if they're still doing it.