This was mentioned in the most recent IU podcast regarding USJ's rendition of FJ; Orlando did begin with a castle tour, but this feature was eventually scrapped. Japan, as Chris G. explained on the podcast, hosts a tour as well. The only issue is that Japan's tour switchbacks, if I understand correctly, are more apparent than the attraction queue's.
I'm not really a fan of the whole castle tour idea, but this could be due to the fact that it hasn't been executed correctly. Too much going on in the narrow hallways that house the queue for Forbidden Journey, and guests clog up those switchbacks like there's no tomorrow. Just a bother, in my opinion.