I proposed to my girlfriend, now fiance', in front of the castle and told no one beforehand. Well, actually I told one of the Magic Kingdom Main Street photographers moments before and...... he was AWESOME at getting pictures. He somehow snapped 20 shots in about 2 minutes, most of them great shots too.
But a word of advice, somehow without spoiling the surprise, get your love to wear something she will consider "appropriate" for such an occasion. I've been blasted for "allowing" my fiance' to have on black shorts, a lime green shirt and aqua nails in the pictures. My bad. :lookaroun