Don't know what ol' Walt's religion was, but he was recognized as active in a couple of EV churches in Orange County CA., especially with the Garden Grove Community Church, today known as the Crystal Cathedral. I once dated a girl who's father was some kind of administrator there, and he had lots of photos of himself with Walt and Rev. Schuller as well as letters between them relating to various church projects in the late 50's.
Freemasonry is not a religion, so that would not matter... But the fact is Walt was not a Mason. His Brother Roy however, was.
Club 33 got it's name from it's address, nothing more. The address was assigned by the City of Anaheim (not as an actual address but a sub-division number really, assigned for tax and licensing purposes- all of Disneyland shares a common address) after the fact of it's being built. Not Walt, not any of the Disney family or employees had anything to do with it. I ate there once, as a guest of a lawyer friend who was a member. Had the rabbit, wasn't all that impressed.
33 is a Degree in Scottish Rite Masonry, the degree, and the number is meaningless to other parts of Masonry. It's not a rank. A 33rd Degree Scottish Rite Mason is no "higher" or any more knowledgeable than any degree of York Rite Mason, or any Blue Lodge Master Mason.
13 has no special meaning or use in Masonry either.
There is no Masonic symbolism or influence involved in the U.S. Dollar bill. The Great Seal(s) were not even designed by a Mason.
Freemason, a little bit of Disney history, and personal experience.