they refunded my fuel charge!

I have 2 cruises booked and I just got an email stating that for cruises booked prior to Nov 7, 2007 and departing after June 24, 2008 are getting their fuel adjustments refunded. I booked my second cruise in December and so it didn't apply to that booking. Dont know whats up with the dates - but glad I got one cruise fuel charge refunded.