northwest
#2
Original Member
Join Date: May 1998
Location: Reno, NV (RNO)
Programs: AA Platinum, AS, UA, DL, HHonors Gold, Marriott LTP, Hyatt, IHG Platinum
Posts: 4,707
You can make the reservations for whenever you want but you have to actually use the miles and be ticketed by 12/31/98 or the miles expire. Most award tickets are good for one year so you can change your travel dates after they are ticketed (probably costing you $50 -75; I don't know the specifics with NW) but I think you'll have a problem trying to extend the miles into 2000.