DO have a dance at some point in the evening
DON'T Dance like a robot, exotic dancer, astronaut or wookie on heat
DO Exhibit platonic tactility. hug people. spread a little love
DON'T Wear one of those hats with mistletoe sticking out of the top. in terms of sexual creepiness, it's one up for night-vision goggles and a net.
DO Give cards of people you really like.
DON'T make a collage with pictures of you and them and the words "bestest buddies" written in pasta shells underneath
DO Make a play for that person you have been flirting with for months
DON'T Get drunk and cling to their leg, crying:"just hold me, i'm so alone".