During summers at the Homestead, you can optfor a meal in the formal dining room, head to Sam Snead's Tavern down the road, or do as most seem to: just hang out at the barbecue on the great lawn, mingling with your fellow guests.
And although many of them have historically aspired to join, Britain and Denmark have formal opt-outs from the euro, and Sweden is also unlikely to join for many years, if ever.