Keep in mind that prices like floral guidelines are only that - guidelines. They say that the MOH bouquets begin at $125, but they were going to make our MOH bouquet for only $50, until we found Wishing Well Florist to do it and the corsages for much less.
I definitely think that a WDW wedding is affordable for normal people. We had an intimate wedding, b/c we loved the idea of a small, (relatively) hassle free wedding surrounded only by our nearest and dearest. The trip was a vacation for everyone, and it was so neat to see our families together at Disney World, especially since we usually only get to see my family once a year or so.
If you're willing to work with Disney, and within either the custom or intimate guidelines, it can be as affordable or as expensive as you choose. Some people go all out, for the Illuminations parties, Cindy's coach, etc. Our intimate wedding cost more than most, because we added extras V&A's private room and a cruise on the Grand One, so if we'd been willing to spend just a bit more, we would have met the $7500 custom minimum. But it wasn't the money that prevented us from going that route; we just didn't want the hassle of inviting all of our friends, relatives, third cousins, etc. that we'd have had if we did a custom wedding. So it's really what you make of it - I think that a destination wedding is pretty different from a normal wedding.
If you are interested in all those extras for the wedding, you might want to join the Disneymooners list. The brides there are amazingly helpful, and some of them are going with really elaborate events, so they always have great ideas for spending money and meeting minimums
Cheers!
Heather W