I had booked our "adult" cruise trip about a month ago and a week later found lower rates so rebooked and had some banked $$, then... booked our return from our Nov cruise at $164pp (using up the credit from before, which I thought was good), woke up this am and checked and got our departure at $131pp (but booked with points!) and just now checked and found return at 131pp also, so got a $160 credit back again after rebooking (5 travelers!). Awesome, points and credit, I guess I'll just have to schedule another trip sometime in the next year!! 
