Another option is to rent an AWD car for the long weekend, and not worry about it. I have a Buddy who does that all the time through Priceline. It might be worth looking into.
2005 325xiT Jet Black / Beige - current daily driver
2015 328XGT Luxury Line Black Sapphire/Saddle- on order
2010 528xi Sapphire Black/Black/Dark Poplar - retired
2008 528xi Sapphire Black / Oyster/ 6sp manual - retired
2003 330cic Jet Black / Natural Brown - retired
2001 X-5 3.0 Titanium Siver /Black - retired
BMW CCA Member