Best wishes on your upcoming wedding!
When DH and I honeymooned in WDW, we got some special attention. As the previous poster said, definitely buy the hats! The one regret on our honeymoon was that we did not wear the hats for more than 1 day as we were afraid they would get ruined. I would say, don't go expecting something extra. If no one makes a big deal you will be dissapointed. Let the magic come to you and remember, you are honeymooning in WDW!