Two young Americans go on holiday to Iceland. One morning they wake up and the entire world's population has disappeared.
Apart from a bit of fun, they mostly mope about wishing everyone else was back rather than having a fucking blast of a time.
If I was in their situation, I would balance structure and fun to ensure I lived well in the absence of services and people we depend on but never got bored in this quieter world. My average week would go:
Monday - Naked food shopping for the week ahead.
Tuesday - House firebombing.
Wednesday - A nice nap.
Thursday - Drink driving.
Well, what difference will it make? 140mph in a 20mph zone... Nobody around to accidentally catapult into a building or anything. Although no one to high-five afterwards would be disappointing.
Friday - Shouting in libraries.
Saturday - Day at the beach.
Sunday - Roast dinner. Mostly tinned stuff.