Sure hope you don't have to downgrade for your honeymoon.

Unfortunately, the Polynesian is a class of it's own. so nothing relaly compares - the South Seas theme, on the monorail, walking distance to TTC. If it comes to a definite change, then first would be to decide if you want to be in a MK resort - the non Tower GV rooms at the Contemporary have some very nice lake views and of course right on the monorail and walking distance to the Magic Kingdom.
The Wilderness Lodge, while not our cup of tea, is much loved by many - a courtyard room, with a lake view could be very nice and there is a boat to MK.
AKL Savannah view would be incredible - quite romantic, peaceful and lovely. A pool view would be very nice, and a greater savings.
If a moderate - CBR has a Caribbean theme with steel drum music being played throughout the resort - we've always enjoyed our stays there and it is very peaceful and romantic.
Lots of guests love POR, but those rooms are in need of a refurb, as would be French Quarter - both lovely resorts.
Do check out the faqs pages and see which appeals most - after all, it is your honeymoon - it will be wonderful wherever you stay!
Will keep fingers crossed for you and send lots of dust!