P.K.
I use these as guides. Then I will call the hotel directly and see what their
price is with AAA discount. It always comes out the same maybe a few
dollars less. Priceline usually works well, but occasionally you get a dive.
I rather be safe than sorry. Usually expedia, hotels.com require payment
up front and I think non-refundable. When booking with a hotel directly,
you can cancel usually up to 4PM that day (or the day before, not sure).