You enter an expensive restaurant and are seated by the hostess

You enter an expensive restaurant and are seated by the hostess. A waiter brings you plates, knives, forks, napkins, and other set-ups for dinner, including bread and butter and ice water, all of which you partly consume. When you read the menu, you realize that the prices far exceed what you can afford, and you then make it clear that you do not intend to order a meal. What type of contract (obligation) do you have, if any? What if, instead, you read the menu and place an order, but say nothing about agreement to pay. Is there a contract? Also assume there is fine print at the bottom of the menu: "20% gratuity charged. $20.00 cover charge per table." If you ordered dinner but didn't see the fine print, what is the effect?