Too American
I remember watching this as a kid. I was expecting something funny, full of laughs and gags. I was sorely disappointed: the movie is an ok comedy, nothing special, not that funny and quite sappy in its message.
I don't know why it's such a cult classic in America.
But I'm coming to the conclusion that I completely missed the spirit of that holiday: travel difficulties, need to be with your family etc. which speaks true in USA, so that's why it's considered a minor classic for thanksgiving.
But it's quite cryptic anywhere else, making its message obscure because of this.
It's too American to be fully appreciated anywhere else.
By contrast, Trading Places is a classic everywhere.