I don't know how it works with HAL, but with RCI and Celebrity, if the price goes down and we ask for a reduction of our price, we get it, even if it is after final payment.
Ask, you might get lucky.
Mariner of the Seas 3/30/08
"Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover."
Check out my cruise photos: http://community.webshots.com/user/Sheffie100