@PBaruch, Outstanding TR! Thank you for all the amazing photos and just the right amount of narrative.
Maybe I missed it, but can you say whether you brought all the food with you? You must have brought all the meat and marshmallows etc. from home?
And, how about all the camping gear? Did you rent it? How could you carry a tent and sleeping bags etc. on the plane with you?
We brought a rolling soft sided cooler bag (as a carry on bag) filled with steak, burger patties, hot dogs, sausages and chicken on skewers. Everything was frozen solid before we left. We brought enough meat/chicken to make a BBQ for just about each night. We used this cooler that was purchased on Amazon:
https://www.amazon.com/Coleman-Can-Removable-Liner-Cooler/dp/B006HFB7UY/ref=sr_1_fkmr0_1?ie=UTF8&qid=1531249828&sr=8-1-fkmr0&keywords=rolling+soft+sided+cooler+bagAnd yes, we brought the marshmallows along from home as well - that wasn't a big deal as its a small bag.
As for our camping gear, we purchased a tent, sleeping bags and other gear in 2016 and we fit it into duffel bags as checked luggage. We did end up buying a sleeping bag for my little one from Walmart since he didn't have one.
Due to my MVP 75k status, I received 2 free checked bags for each person on my reservation code and I was able to get 1 free bag for others in my family (as a result of having the Alaska CC). When checking in at JFK, the person assisting us made a comment "are you moving to Alaska" because we had so many bags.
Aside from meat/chicken, there was plenty of kosher food in Alaska. We found kosher beef jerky, lots of different flavors of kosher salmon (individual slices), lox, cream cheese, chumus, string cheese (non cholov yisroel), yogurts etc. We even found kosher bread at the Riley Creek Mercantile Store in Denali National Park (Dave's Killer Bread with an OU). We were surprised ourselves at the broad availability of kosher food in Alaska. For breakfast/lunch, we made lots of different sandwiches.