Congratulations!
I got married in October 2009 at Celebration, it was amazing! A week later, my sister (CAROLINE4 on here) got married on Cocoa Beach and that was beautiful too! She requested a part of the beach with no reeds (I know that sounds bizarre haha) and she was so glad she did, the pics were all gorgeous sand and sea!
I think if you are worried about all being dressed in white and whether they would let you in like that, id just split up for entry and meet at the other side of the turnstiles!