If you have to pay separately for your breakfast you may find it quicker and cheaper to pick up some juice and a muffin at night, and store the juice in your hotel room's ice bucket. The next morning, enjoy a quick, cheap breakfast before starting your day.
Before you head off to a big resort for vacation, head for the Internet. You might be able to view the menus of the resort's restaurants online. If you want, you can print copies of the menus and plan which restaurants you'll eat at during your stay. You might even pick out your entree before you set foot in the restaurant.