[noodle]

> a model customer is also someone who never complains no matter how bad the service is

hardly. but a model customer probably isn't an ass about complaining, either. i've complained about tons of shit, and they are much more receptive and responsive when they know its someone who is usually nice.

> It is not as simple and gracious a system as you suggest.

never said it was. i don't disagree with what you're saying, and it comes down to the fact that the person taking your order is going to get fired if they tell you to leave because you're a bad customer (in most places). so they generally have to sit there and take it, for the most part. which is why a good customer is usually treated like gold.