In reply to Chriswhoruns:
Get to camp. Get set up. Get in sleeping bag. Put on warm, dry socks. Have dinner. Drink tea. Rehydrate
Need to pee.
Need to put manky, sweaty, soggy, bog drenched fell shoes back on. With your nice clean socks.
2 plastic bags protects your socks from your shoes meaning a much more comfortable night's sleep.
BB