We got ours taken on Main Street in the Magic Kingdom. You can also get one taken where they superimpose Stitch popping out of a hat in your hands.
Just ask the photographers when you enter the park.
When we were there last week I asked at the Xmas tree right by the tomorrowland bridge and he said he could do a castle shot but not tink, only the main st photographers can do tink. Look for someone around the rotunda with the walt statue or down main st a little ways from there.