When I was planning my wedding/honeymoon, I didn't know much about WDW and all it had to offer...our celebration was to be our first ever visit. Keep in mind that whatever "extras" you get are entirely up to the specific Cast Members. While many of the brides here have gotten some wonderful "pixie dust" moments, just as many brides got very little. It just depends. Don't expect anything and everything you do get will be a wonderful surprise!
I visited the Theme Parks Attractions board and the Dining board to try to get some recommendations for some special ideas.
One thing to remember, as you are making all your dining reservations, be sure to mention that you are on your honeymoon. And mention it again as you are checking in at your hotel and all the restaurants. You may get some "extras."
Definitely try to wear the bride and groom ears and get the free buttons at Guest Services. You will get lots of congratulations and maybe some other "extras".
There are several tours you can do. We did the Around the World Segway tour and it was fantastic! There's a new segway tour that may be available at Fort Wilderness. There are lots of other tours too, like the Keys to the Kingdom tour and the Backstage tour.
Most of the deluxe hotels have a spa in them...you could book spa treatments for you and your DH2B.
I hope that helps some...I'm sure some others will give you more ideas too!
Congratulations and have a wonderful time!!