"I'm Wishing" does ring a faint bell, now that you mention it; I'm remembering it as one of those 'duet with the birds' numbers in which the heroine sings a phrase and it gets echoed back... But I haven't seen the film for well over twenty years -- in fact, the very cinema in which I saw it hasn't existed for near as long -- so this is a very faint memory indeed!
(That was in the days when Disney used to re-release their classics on a regular once-per-generation basis: home video seems to have killed that. The last one I remember doing the rounds of the local circuit was "The Fox and the Hound".)

I didn't remember the joke about Snow White's holiday photos, but on looking it up I do :-) I suspect that's about the same vintage as "How does Batman's mother call him to the meal-table?"