We've done both, and I would do either one again, and probably will when we go on our next holidays! Cape May is a good breakfast for the generic characters, and certainly a whole lot less rushed than somewhere like Chef Mickeys. I think though, 1900 Park Fare wins out though.
It can be very good fun with Alice, Mary Poppins, and of course the Mad Hatter. On two out of the three times we've dined there, they've turned out to be one of the best meals of the whole trip.
The first time, my sister had gone to the buffet to get her breakfast, and the Mad Hatter came over, and I was looking around for her. He was like, "is there supposed to be someone else at this table?", asked for her name, then stood up and screeched her name at the top of his voice! And last time we went, Mary Poppins and Alice were continually playing tricks on each other and putting various condiment sachets on each other!
So, Cape May is more peaceful and subdue; 1900 Park Fare is funny and loud!