Living in Britain we tend to forget the garden in the winter. However, there are a lot of advantages to moving the party outside. As the night progresses a bit of fresh air can slow the effects of alcohol and save your furniture from sloppy drunks.
There are some simple ways to make your winter garden inviting; line the edges of your lawn with slow-burning wax torches , scatter pillows and fluffy rugs on benches and chairs or turn your garden shed into a romantic folly.
Your introvert guests, will appreciate finding a retreat for a quiet tête-à-têt. Guests who still smoke, quelle horreur, can indulge without feeling like outcasts.