Now, actually. About an hour should be enough for those of us who are taking the warrior path to snap out of their Heartless induced funks. Mages, take another 15 minutes, and scouts/specialists another five after that.
EDIT: Keep in mind--the world has ended, you have been thrown into another world, you may be in a place with no people (Disney animals included) and you've been traveling through Darkspace.
No going GAR instantly. Also remember that you don't know that you're precious item has morphed/you've gained powers.