Well in the whole "greek unity" spirit of things, obviously, you'd be the bigger guys to suck it up and let them come up. But a whole weekend might feel very long, I get that, I have inlaws that get about a 24-hour window here... So maybe you find some reason they can only come up Friday night and have to be gone by like 3 on Saturday or something, that way, you seem generous and cool, they get to come up and ooh and ahh about how amazing your house is (and you know you guys will love all the ego boosting
), they'll feel cool because they're visiting a "cool" house, but you really only have to deal with them for about 20 hours and too much damage can't be done in that time period (I would hope...
).