There will be a car involved, at some point
Unless you're someone who lives walking distance from a metro stop (hahaha), only goes to restaurants that are ALSO walking distance from metro stops (hahahahahaha), and understands our city's byzantine bus system (not entirely sure this person exists), listen up: there will be a car involved, whether it's your own, a taxi, or a rideshare. This means a) someone will be running late, b) that person will blame traffic, and c) you will know they are full of shit because you came from the same direction, in a car, and hit no traffic. Also, there will be a discussion about how many drinks you can have if you're driving, and someone will say that Uber has changed that for them while they order their third drink. And also...
If you're driving, you're valeting
I've spent a lot of time in NY/CHI/SF and I can't recall ever seeing a valet stand there, but here it can literally be a non-starter: if you're planning on going to a restaurant, and it doesn't have valet, and you can't find parking in, like, five minutes, it's not getting your business. Sorry, restaurant. Maybe next time.