Cruisedad, read your offer if you still have it. I am pretty sure it is only if you book within a 120 day window. We have cruised in '99, '00,'01 and '02. We had the credit each time on the returning cruises (the last three). Now we booked '02 and next years '03 at the same time. I don't know if we will get the credit or not. We were suppose to at the time of booking but if the offer is changed I guess we will find out next spring break.
What we have always received for a return cruising gift was the black sports bag with water bottle. We have 6 of them now since we had to get 2 staterooms in the past. I believe during the first 7 day cruise, our first repeat cruise in '00, everyone onboard the ship had one in their stateroom with the date sewn on it to commemorate the 1st 7 day cruise.
Most cruise lines do give a little incentive to get returning cruisers to book again. The Disney ships are not always full and so you would think the program would keep up until the ships are always full.
I don't know much about DVC but the few members I have met on the cruises had said the cruise really isn't a good deal when using their DVC points. So I assumed they charged members alot more point value which has a dollar value than if they just used cash and saved their DVC points for a land Disney vacation. Kathy