To the MRE portion of this discussion, I stocked up last night unexpectedly.
I was at American Science and Surplus w/ #2 son and they had Sopako MRE's, w/ heaters for $6 - that's a great price when
you don't have to pay shipping. https://www.sciplus.com/
Vintage Nov 2016.
I'm also seeing them on Amazon in the under $7 range w/ Prime by the case of 12, so certainly not a major deal these days to get them.
A unit ramping up some GTs could order a single case and fill 6 each with no issues.
I grabbed a few each of Chili Mac (The king of MREs), Tortellini, & Beef Ravioli - I can swap out the aging Mountain house
stuff in my gear and bike, and not think about this again for a couple of years. I haven't bothered with meals in the 72 hour
gear anymore. It doesn't get used enough, and CAP doesn't go anywhere for more then a day, with less then a few days notice.
I could Prime them if needed.
I still have this ziplock bag full of heaters that are about 10 years old I don't know what to do with. BITD, a lot of commercial
MREs shipped without them and I bought them for that reason, then never used them.