My df's soon-to-be brother-in-law proposed by the wishing well. It's by the castle and it seems to me that no matter how packed the park is it's always quiet by the wishing well and there's no one there.
I actually set the whole thing up for them. Basically I made up some bs story about how I always go there when we go to the Magic Kingdom to make a wish...so the four of us went over there and after df's sister made a wish she turned around to find her boyfriend on bended knee! He said "I hope I can make your wish come true...will you marry me?" Sure enough she had wished for him to propose this summer.