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Steamboat Rule
(i.imgur.com)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
Disney is not going to lobby to stop this because they can use trademark law to protect the mouse.
And they've already transitioned to using the Steamboat Willie model for the opening of their new movies as part of their trademark. As soon as I saw that happening I knew it wouldn't matter that the copyrights to it would finally go away because Disney found a new way around it with the trademarking.