I was equating your post-disney blues to post-wedding blues, when i realized that your post-disney blues ARE your post-wedding blues!! Which, of course, is only making your situation worse.... Like Christmas (that we shop for, decorate for, bake for, etc. for months, and then is over in 1 day) your wedding has that same "let down" -- except even worse than Christmas --which, like clock-work, comes every 12/25-- b/c your wedding only comes once.... I had the same scenario -- wedding that I planned for 1 1/2 yrs and then a "Disneymoon", but I let the excitement of just coming home each day to my new DH and cooking a meal for just the 2 of us, etc., get me thru the post-wedding/WDW "ordinariness"....
Take up scrapbooking, if you haven't already - it's a great way to re-live all of the great memories!
Plus, aren't you exhausted from all that wedding planning and your WDW honeymoon?! Rest up -- enjoy the "nothingness" -- if parenthood comes as quickly as you want it to, you'll need your rest!!!
(Plus, like the other posters, I agree-- start planning that "surprise, we're having a baby trip!")