Actually found skewered grilled vegetables in Disneyland's Frontierland -- peppers, squash, red onion and one little potato. They also have bacon-wrapped asparagus, which is great if you're counting carbs. The park also has bananas, Vitaminwater Zero and Powerade Zero in addition to bottled water so it's not all churros and turkey legs. Couple that with a half-marathon worth of walking and you should do OK at Mickey's place.