Hi Jane!
With the Quick Service Dining Plan, each member of your party will get 2 snack credits and 2 Quick Service meal credits for each night of your stay. So if you stay 4 nights, you will get immediately upon check-in 8 snack credits and 8 Quick Service meal credits for each member. The adult credits are pooled together and the children credits are pooled together. You can get more information on the dining plans
here.
You do not have to use all of your credits each day. You can save them up or you can use them "early". For example, In the scenario above, you could eat 4 snacks on your first day and 3 Quick Service Meals on your second day, etc.
You can find Quick Service restaurants that have eggs and bacon for breakfast. Likewise, there are Quick Sevrice restaurants throughout Walt Disney World that have hot dogs and hamburgers for lunch and dinner. I suggest going to the independent website AllEars.Net and looking at the various Quick Service restaurant menus. They do a great job of keeping the menus on the site current.
Write back if you have any more questions!