You could, it depends on what you mean by reception. If you're looking for a small private dinner for your small party, the Grand Floridian is a perfect place. Their private dining department (407-824-2474) is pretty good at setting up lovely events. Since you want to be at a resort and not a park, it would be no problem to wear your dress. You could also possibly rent out one of the restaurants or a private room. I'm sure there will be other ideas. Now if you wanted to do say dancing, etc, I'm not sure how that would work.