If you can swing it...
We were married last September, and went in November. Why? Well, the value season starts in November (cheapest rates), the lines are shorter, the weather is nicer, and the Food & Wine Festival started in Epcot.
If you can afford it, stay at OKW in a one bedroom Villa. Why? Where do I start...
1) A nice two-person Jacuzzi in your room, very romantic. Just add candles and suds!
2) A large, large LARGE room - one of the biggest on the property!
3) King-size bed - perfect for honeymoons
4) Not one, but two TVs! Oh, wait, you're on your honeymoon... never mind
5) Your own washer and dryer
6) A private screened-porch with nice views
7) Pools are very quiet and nice
8) A fully stocked kitchen means you can safe money by eating in - we did all our breakfasts this way, and it helped
9) Park right out front of your door!
10) Bus stops are very convenient - we never had a problem waiting or riding the busses
11) Take a nice romantic walk to Downtown Disney
12) Very quiet, laid-back resort
13) Did I mention the Jacuzzi in your room?
Yes, the room costs twice as much as a moderate, but you get twice as much. We had the most wonderful time there last November, and would return in a heart-beat.
Good luck, and everyone else is correct. No matter where you stay, you will the most magical time!
Congrats!