Hi, Evelyn! Thanks for the glimpse into my world 5 to 10 years from now! I can only imagine how voraciously hungry my guys will be in their teenager years. So long as they keep their hands off my popcorn and pepper jack, we're good.
Your needs are more pressing though, so let's get to it.
Being from Wisconsin, big portions are a big deal. It's funny how places in Disney World immediately come to mind when you ask about good, sizable portions for quick service and snack credits. Here's a quick hit list for you to keep in your back pocket. (Keep it out of sight of your teenagers, lest they eat it at a critical juncture in their growth and development.)
Epcot
- Meals: Sunshine Seasons
- Snacks: hand-twisted pretzels (Germany); pastries (Kringla Bakeri in Norway and Boulangerie Patisserie in France)
- Freebee: beverages at Club Cool
Magic Kingdom
- Meals: Tomorrowland Terrace Noodle Station; Pecos Bills; Cosmic Ray's
- Snacks: popcorn (keeps 'em busy;) Dole-Whips (Aloha Isle;) Funnel Cakes (Sleepy Hollow)
Hollywood Studios
- Meals: Pizza Planet and Catalina Eddie's (pizza and a salad option)
- Snacks: soft pretzel (Anaheim Produce, pay out of pocket $1 for cheese dip); desserts, including super filling cupcakes (Starring Rolls)
Animal Kingdom
- Meals: Yak & Yeti quick service; Flame Tree BBQ
- Snacks: I'm drawing a blank here. Let's go with "people's choice" or a Mickey bar
Downtown Disney
- Meal: Wolfgang Pucks Express (biggest portions / best value hands-down)
You'll also find a lot of food for your money at each resort's food court. Pop Century, Contemporary and Coronado Springs come to mind.