I've been here for about a week now and there are definitely a lot of things I'm still getting used to living "OCONUS." Alaska (and Hawaii for that matter) is a little unique in the fact that it's considered an OCONUS (outside of continental US) assignment, but you can drive, take the ferry, or fly there. They speak English, the roads are measured in miles and gas sold in gallons, but Alaska is completely different than any other state I've been to, and now I've been to them all.
First of all, all the cars have plugs sticking out their fronts. That's because up here you need to plug your car in at night or if you'll be out of it for several hours to prevent the battery and other components from freezing. Winter starts early here and I've heard the first freeze is at the end of August and the first snow starts in September.
Also, the rental market out here is awful if you have pets. Alaskan homes use oil to heat them and a lot of places pass that cost onto you, the tenant. That's not so bad in the summer, but in the winter a house can use 500 gallons of fuel a month. Gas is $3.88 right now in Fairbanks, so that can be up to $500. Plus, the electricity out here uses oil to generate the electricity, so you will be charged for both the kilowatts used as well as the oil used to create the kilowatts.
A lot of the homes on the rental market are dry cabins, meaning they have no running water and an outhouse. This means that you need to haul your own water for dishwashing and drinking and when it's -50 degrees, you will have to walk to a use an outhouse outside.
Food isn't too bad. Most of the produce comes from the Northwestern United States, like Oregon and Washington, but since it still has to travel several thousand miles to get here, it doesn't keep for very long and costs a bit more than down in the lower 48. On the big plus side, there is plenty of hunting and fishing going on and you can easily buy fresh salmon and even reindeer sausage. There's also wild raspberries and strawberries.
There is near constant daylight here right now. I actually woke up at midnight a few days ago and thought I'd slept in until the following day because it was so light out. The flipside to that is in the winter the "day" will be like twilight at best.
The mosquitoes right now are ridiculous. Bug spray mostly helps but every day I find new bites on my fingers or neck and I've even caught them biting me through my shirt and pants.
All in all, Alaska is a great place. Not only is it beautiful, but I'm a big fan of no state or income tax and the fact that everyone can conceal carry.