Xmas: how do you get rid of visitors who linger, fave beach

Back by popular demand, we've got a couple of Christmas questions today. Firstly, its an ucomfortable question for some, and an unfathomable question for others. What do you do when people are lingering at your place for too long on Christmas Day, and its time for them to leave? And of course, we'd be REMISS if we didn't ask people about their favourite summer beach.