I agree with 80kntsclamp, plenty of healthy options at the airport. I pack 2 cut up rotisserie chicken meals with veggies and rice for the first couple days. For breakfast I back a cup of oatmeal, apple, and the 25 grams of protein muscle milk. The chicken saves me from buying one meal a day the first two days. Beyond that I don't feel like dealing with keeping my food cold/worrying about food poisoning.

I always bring plenty of snacks to last the entire four day. This plan has allowed me to drop my overnight expenses per month from approximately $300 to $180. (Mint.com has me treating myself as a corporation) Nice to see how everyone else goes about packing lunch. Shout to the folks that pack every meal. I tried that and I started losing energy from being hungry and feeling sick from day 4 ppj/deli sandwiches/tuna