for 9 days in 2004, I relied on direct grilling of refrigerated meat, and when frozen meat started to thaw with skewers of kabobs so there was no clean up needed... a couple of potato/ground beef patty foil pouches were pre assembled for Irma, as well as a couple of cans of "chunky" soup and stew directly from their cans... heated in a bath of hot water
I have not had to deal with a boil order of city water since the very first storms in the 60's but still prepare for that ... a 1/2 gallon of Clorox is on the shopping list at the beginning of each tropical storm season