J.B.
Well, if it's BYOB, you can't control red wine. However, is there a budget? Could you possibly provide drinks -a clear, non staining alchohol punch and some vodka drinks, champagne -that sort of thing? Also, steer clear of chocolate, salsa and mustard. Choose little pre-made party quiches, cheeses and crackers w/charcuterie, vegetables with a white ranch-style dip and non-greasy items. Is the finished basement large enough to house the party there? Was it part of the remodel? If not remodeled, but large enough -funnel them all there! If not, have plenty of coasters and napkins out, and if you have new, light-colored furniture, place some festive throws all over it. This could also possibly be cute depending on the style of your new tile/carpet/decor (or horribly tacky -just depends on what you find), but look at Home Depot, the dollar store, Walmart, etc. for cheap throw rugs. I saw a bunch the other day in Christmas patterns -or you could get some that generally match your colors. That could at least cut down on possible stains and ground in food. Good luck!