have a basement?
so this is what you do.
Make sure everyone parks all down your street, spread out too (so it doesn't look like they're at your house).
everyone who comes and drinks, stays in the the basement till the next morning. You come to party, you stay the night, that easy. (+points if you have a bathroom down their that people can use). Now give your rents a couple of DVDS and let them sit in the living room and chill.
cops come?
well thankfully if you're in the basement they wont see you or any alcohol, they wont smell it either and if you're friends aren't shitheads they also wont hear you. This is why its nice too have your rents, they get to confront the officers and you dont need to deal with them.
If the cops come the only reason i could imagine it being for would be a disturbance of the peace/Noise complaint. and too this your rents just say "oh my son has a few friends over, ill ask him to keep it down" yada yada yada