Actually the trucks are usually loaded and rolling before anyone checks the site, so walking it the morning of won't help once dispatch calls.

Tbh that old timer saved your cook. Paper lets the meat breathe so you get that good bark instead of mushy foil steam. I switched about a year ago and never looked back.

Man, I used to be one of those people who said just eat before you fly and stop being cheap about it. Then I got stuck at O'Hare with a four hour delay and paid $19 for a soggy wrap that tasted like wet cardboard, and I totally changed my mind. The foil is the whole problem here, not the food itself, because that shiny stuff lights up the scanner like a flare and the agents have to look at it. Wrap your sandwich in plastic wrap or a plain ziplock bag instead and it slides right through without anyone batting an eye. Also put it in your carry on and not a checked bag, since cold sandwiches keep fine for a few hours anyway. Bring a soft one like a PB&J or a bagel too, because anything squishy survives the trip better than ham and cheese does.