I did Disney for my honeymoon (Jan 1-5th), and believe me, it is so much fun, even with the stress. Remember, this is your honeymoon, you don't have to ride every ride multiple times, etc.
you don't have to make reservations months in advance for every night, only a few places do, and you prolly will not want to do those (unless you really have a wish to be at the cinderella castle character dinner). I didn't make reservations untill I got down there, and I went to three good restaurants for romantic dinner/lunch: 1) Brown Derby in MGM, 2) The Seafood place in Epcot, 3) The African place in the Animal Kingdom Lodge ( recommended, they have tons of African wines there).
Ya, you need to get up decently early, thats the only drawback. Using fast passes is not really that bad, and the service for honeymooners is excellent. You will not be disappointed if you chose it, trust me.