Remember, the goal of this process is to add artificial fairness. The people with the most money are the ones least likely to like this system; they LOSE benefits under this system, as the current system meets all of their needs. They can eat anywhere they want, whenever they want. That is why they would get angry and storm out. Some would argue the whole idea is to make them angry and storm out, so that people that live in the neighborhood can eat there once in a while. Or, so that the restaurant can take the revenue that scalpers currently take.
Nobody is going to go through all the effort of getting a reservation, traveling to a restaurant, getting to the front desk, and then storm out and ruin their entire dinner plans on principle just because they were asked for ID.
> I wouldn't be surprised if most don't even carry it around with them.
I highly doubt that people are bringing their credit card but not their driver's license when going to a restaurant. Why you think anyone would arrive with a means of payment but not a 10 gram ID card is beyond me.