Below I have some examples of food items you can bring. (not all are pictured) You can easily pack all of these items depending on the length of your vacation and how much room you have to store food. Put these food items in sealed containers, ziplock bags, and a small cooler to stay fresh.
All natural fruit leather
All natural peanut butter
Individual mini guacamole cups
Individual mini hummus cups
Air popped popcorn
Check out this post from coconutsandkettlebells for some other food item ideas to bring on vacation.
Restaurant Nutrition App
When I'm on vacation I also like to use my favorite restaurant nutrition app.