Not really, never seen a reason to hide it - although, I guess some may "question" it without my knowing.
I don't wear Disney clothes often (except for a Disney World track jacket) unless I'm in the parks. I do, however, have lots of souvenirs from the parks and I typically buy big pieces (Olszewski, Arribas Bros.) when I go to Disney World. I also have a lot of art work (all framed, of course) from both the parks and movies (vintage and modern) in my home. Not all over, but there's Disney touches here and there. Also have a Mickey Mouse iPhone case as well. I have been a Disney person ever since I can remember. While my family like it also, and "get it", they don't quite live it, like I do.
As far as at work, yes, I have a picture of the castle at my desk, some postcards from the parks/cruise and some collectibles - most people who come over to visit might say they are "cool" and ask to hear about my trips - never anything negative really. Maybe I just work with really nice people?? Lots of people only travel to the parks one time, and usually when they are kids, and don't think about returning - it just doesn't occur to them. Not that they wouldn't have a good time, it just doesn't even cross their mind to go there as adults - they'd rather go to an island, drink, party, and do that whole scene - that is NOT what goes on at Disney World - to each their own. Myself, on the other hand, can go once a year and NEVER be tired of it.
I also have all the movies as well.