People have given great ideas.
Locations that might be nice if it doesn't have to include pin trading or food:
Front of the monorail
similar to above, caboose of the train
Near the wishing well at the side of the castle
Center of the esplanade
At the top of the main street viewing area at main street station
the terraced viewing area for world of colors
near the fireplace in Grand Californian
in Mickey or Minnie's house in Toontown
Front and top of the double decker bus on Main Street
On the carousel in Fantasyland
The ferriswheel (don't know what it's called now) at CA (at the top of course)
So excited for you!!
Congratulations!!!