My 60 yr old dad's a consultant... Like you said, usually he uses the hotel gym or joins one in the area, if it's a long enough project. I know he finds it challenging to eat well, even by CW standards, when he eats most of his meals in restaurants. Generally steakhouses seem to be good bets -- you can at least get an actual steak/ piece of fish and vegetable, or a steak salad. (Sure, not grass-fed, but worlds better than most other options.) I've been talking to him about PB, but other family members are pushing competing regimes...including veganism :P I'm hoping I can win him over.