Done and booked! After an hour online with US Airways and 3 seperate phone calls to figure out why the feck my reservation wouldn't take (turns out I have to not use # signs to designate an apartment, have the same home address as my credit-card billing address, and - oh yeah - not use Safari), the tickets are booked! We're off December 21st and back January 6th. Woo hoo!
Thank you, Heather! You saved us a ton. I owe you a sangria - the non-watered-down kind!