hurricane Irma a couple of years ago (less than 3 day outage) was my first with portable generator... and a couple of the lessons learned after 2004/2005 (9 and 5 day outages) proved themselves... small things, but made life a lot easier
switch to a flat Asian style single burner stove capable of running on propane or butane... heated a pan of water and just poured it through the brew pot of the inexpensive Mr Coffee filter basket
a multi plug power strip that can supply all my chargers off the same 120V circuit
a stainless insulated mug (Yeti clone) to keep iced tea cool (I swich my refrigerator contents to a 7 day cooler with 4 frozen 1 gallon jugs
1 7/8" ball on the riding mower to pull the utility trailer... mounted the 3500W gen set to use squeeze bulb siphon fuel system so neighbors could provide fuel to keep their refrigerators up... made yard clean up easier with the trailer
regards