1) hide any expensive stuff, and hide it well
2) Lock and i do mean LOCK the parts of the house you want noone in
3) have a sober friend or 2 that can kick ass if needed
4) prepare for the worst, 10x more people then you want are gonna show up
5) hide every kitchen knife you have
6) force people to walk, lots of cars = problems
7) have someone at the door - pref one of the sober ass kicking peoples
8) get 10x more beer then you think you will need
9) trash bags LOTS OF THEM, as well as rags to clean up spills
10) pray
in all honesty its a VERY BAD idea, i speak from expirence, and evenif things go OK something fvcked up will happen, and you parents will find out and thats not good