We have been married for 12 years, got married at WDW in January 2002. I was and am a practicing catholic, husband is not. I was given the nth degree by my family about being married outside of the catholic church, my aunt even said "well my daughters will never do anything like that" to me. I did it anyway. Personally I feel getting married in a church and then having a wedding at Disney is kind of... not being truthful to yourself. If you want a Disney wedding have a Disney wedding, and have that be your REAL wedding.
The church I go to (and then), required we wait a year after our wedding to get blessed by the church, no one gave me a hard time about it, it was straight forward and easy. IT WAS NOT EXPENSIVE. It was not another wedding, and I do not view it as our wedding date, but I did want to do it to "do it right" an "follow the rules".
12 years later, we are still married, I am happy now with the decision that I made, and am happy I followed my heart to do what I wanted to do. That's the most important thing, DO NOT let others dictate what they want, to become what happens, you will be miserable. Do what you want to do, only then will you truly be happy and that's the whole point.
Jennifer