Eating after a heart problem

This question is for those who have had a heart attack or angioplasty procedure. My stents were installed in earlyJune. If I return to driving I am worried about what I will eat. Even now I am having trouble adjusting to the low fat/no salt diet when not at home. Fast food is a no/no as is a lot of restaurant fare. I am a company driver and have always had a truck with a fridge . I also bring a 12 volt cooler. When the truck has an inverter I bring a microwave. BUT some of the foods I was nuking have almost a day's worth of sodium. Canned soups and chili are out. Same for those Hormel meals. My wife always prepares chicken breasts in the oven and cuts them up. I start out with enough salad for 2 days. Always have canned tuna. She also packs some egg salad ( without the yoke). I used to have trail mix, corn chips, mini chocolate bars, M&M's and other junk. NOT NOW!. I do bring cereal and am not drinking milk. Only soy milk. But after 3 or 4 days I will be out of a lot of the good food. There is almost nothing in a truck stop that I can eat. I used to love the J's loaded Pizza! Wal Mart ( when available) does have nice ready made salads and low fat luncheon meats. A rotisserie chicken is too much for one guy. How long will that chicken keep? What do others do? Looking at the guts on a lot of drivers along with an extra 50 lbs. there must be lots of drivers who have had heart attacks.