Bowgie, you do know the expedia coupon expires today, If I was you I would book a hotel stay for 2 nights. I chose the b roppongi and it cost me $13 out of pocket and appears changeable for a 25.00 fee .The you could wait for cheaper airfare to open up
good luck and happy new year

*edited to add that the $250 package can be used on hotel alone in Japan for those who may not know this*