Question is....are you looking for everyone to stay home or do you want to have the house to yourself?
If the wife goes with the kiddos...then she isn't going to be able to drink. Which means she probably won't have that great of a nite and may not be so chipper, which will really kill your buzz that you started working on when she pulled out of the driveway.
I'd make it so everyone stays home. Just pull the cables off the battery on the war wagon and "fix" it in the AM.