I was flying EWR-MAN on a regular basis and just decided that the food wasn't worth it, even in C. The plane trip was only 6 hours. I valued sleep ALOT more! I ate a decent meal at normal meal times, and slept the entire way over. I will usually wake up and eat the light breakfast offering. I would then hit the showers at my hotel after landing and head straight to the office. It kinda sucked but doing it this way I got over the time difference very quickly. If travelling for pleasure with someone who doesn't ever get to travel in C I will usually partake of the meal and the liquor for the sake of my travelling companion.