Some things I didn't need to spend four months in simulation in the Arctic to learn:

1. Indoor flush toilets are amongst the peak achievements of civilization.
2. Butter is delicious, as are fresh vegetables and nicely-cooked meat.
3. A comfortable bed in a dark, quiet, private room is more conducive to a good night's sleep than half of a hard bunk in a tiny hab without any soundproofing in 24-hour sunlight.
4. A change of scenery and company is nice every once in a while.
5. A long hot shower is an extraordinarily pleasant thing.

Something I did learn:

With sufficient motivation, training and luck, a crew can do without all of the above and do just fine, thank you very much.

Not that that first shower wasn't pretty amazing. We were using 10L of water per person per day at the hab (including cooking, cleaning, and drinking water), and I must have poured a crew-week's worth of water over my head (30min shower at 10L/min = 300L, so not far off). Worth every drop.

In Resolute now and heading south tomorrow - home soon!