We just have a Christmas lunch. We all decide on a nice, ritzy restaurant we like, then book it for lunchtime, eat, drink, be merry and then get to go home after and we're off till after boxing day. We enjoy it. Most of my co-workers are English so they have a great time ordering the English beers on tap, generally making the waitress repeat "what's on tap" 3 or 4 times just for fun