One of our favorite get to know each other game is "Guess who?". Get a package of those sticky name badges and write different names or characters on each one of them... Mickey Mouse, Gov. Rick Perry, Willie Nelson, Statue of Liberty.. etc.. Then when people arrive, place 1 of these on each persons back... Each person must ask other people a yes or no question... Am I a human? Am I a movie Star? Am I a Disney Character... If they guess correctly, they can move their name tag to the front of their shirt...
The other thing I love to do is have a grown up pinata... I fill it with Breath mints, Lottery tickets, Gold $1.00 coins, condoms, Liquer chocolates, Small packages of asprin etc... The adults go crazy when that thing breaks open.. It is really funny once everyone has loosened up a bit.. Take photos..