I have called expedia and have been confirmed.
I called the 800 number & that csr transferred me to a csr in seattle. the csr in seattle called the help desk which then contacted hilton tokyo.

expedia said that they would honor the reservations at the rate we paid for ($3). they also gave us the case # for confirmation.

here are the dates that booked.

for myself... may 1-9 in tokyo
may 9-14 in osaka

for my mom... may 1-14 in osaka

and aug.12-18 in tokyo

aug. 18-24 in osaka

all rooms are king executive