If you are planning on bringing your meals, why not just transport them in an insulated lunch tote? You can freeze a bottle of water to keep everything cool until you can get to it and you have a nice cold beverage to have too! I also have a non-primal cafeteria at work so I'll list some of the things I bring....
Green Salad with protien (chicken, steak, HB eggs or what ever is left over from dinner)
Salmon in a pouch
Smoothies..... great recipes from Primal Toad
Hard boiled eggs
Mini meatloaves (frits and loaves made in muffin tins)
If you have access to a microwave, any primal leftovers are options too! I took me a little while to be able to "think outside the box", but once you do, you'll realize that the possibilities are almost endless.
Good luck on your journey!!!