For us, we do carrots, celery/fennel, sugar snap peas, slices of whole grain bread, baby bell cheese wheels, organic yogurt tubes, raisins/cranberries (aka Craisins) or other dried fruit, lots of water (freeze a few), and a variety of fruit including mixed berries (a must for us!).
This year we'll probably add sliced peppers and/or cucumbers, sprouts/shoots (if we can find them), and a juice box.
Of course we'll pick up a small amount of junk food too (crackers, pretzels, chips, goldfish, cookies), but only if we can find the brands/varieties that we're okay with. We try to minimize things like preservatives, artificial food dyes, trans fats, artificial sweeteners/high fructose corn syrup, processed foods, etc.
If I know my daughter is getting the food that I want her to eat (and avoiding the crap listed above), then I can justify and feel comfortable with her eating a big-old ice cream sundae every day on vacation. hehe...
If only Orlando had a Trader Joe's! I know that they have a Whole Foods, but TJs literally sells many of the same (or similar) things at half the price (repackaged as private label). We'll probably bring down some of our own candy though, as I don't want my 3yo daughter to feel deprived.