I live in FL and we go to Disney as often as we can (which is not near often enough:P)- so I too have a "Disney" scrapbook.
I don't know where I found it, or if it is even still available, but google "castle pattern". I found an excellent template for a castle that looks very like Cinderella's castle at Disney (world. Haven't been to CA, so I can't say it's like that one).
Also, Mickey is just 2 small circles and one big one.
Big Lots often has Disney themed gift paper on rolls. If you have a cutter (or alot more patience than me) you can make your own paper.
Fortunately, Disney is pretty much everywhere, and often on clearance. I don't know how acid free it all is, but they make this wonderful stuff at the craft store here that makes papers acid free.
Hope this helps, and that a bazillion other people didn't already say the same thing