Heres how our family uses a kitchen on vacation:
Breakfasts
This belongs to me. I try to make a big a production out of breakfast as possible. Great coffee, fresh squeezed juice, some elaborate egg dish, and lots of fresh pastries (I usually get up early and hit a bakery every morning.) I think a festive breakfast puts everyone in the mood for the days activities. Vacation should be about getting away from the norm so I refuse to allow breakfast cereals and peanut butter to rule the morning. As fun as these are for my family, we still go out at least a couple of times for some kind of over-priced breakfast buffet preferably onsite. Price wise we still come out way ahead.
Lunches
Heres where my wife takes over. She likes to get the very best deli fixings she can find cold cuts, cheeses, fresh breads, tomatoes, gourmet mustards, avocados, . Then she makes stupendous sandwiches to bring to the parks. We then augment these with goodies at the parks. If we decide to go someplace nice for lunch, then we wont bring any sandwiches. But otherwise, I would far rather have one of my wifes gourmet subs than any fast food you would care to eat.
Dinners
Since we are already saving a lot of money staying offsite, we like to splurge on dinners. So for the most part we eat at the parks. However, we have been known to relax back at the vacation home and eat the occasional dinner there. In this case I like to head off and buy everything ready to go: frozen lasagna, pre-packaged salad, ready to warm garlic bread, a couple of expensive steaks and the most expensive and outrageously flavored ice-cream for desert.
Snacks:
Now, this is what kitchens are really all about for us on vacation. In the evenings we love to make to ourselves mixed drinks daiquiris and margaritas are our favorites. We will cook up some pizza, make some nachos or just snack away on a collection of exquisite cheeses and crackers. Even if we ate every meal out, we would still get a kitchen just to make it easier to relax this way in the evenings.