Don't question it. Just go with this beautiful madness. Skip about a minute in if you want to get straight to Sora meeting Woody and friends:
It's all in there: Andy's room, his yard, the toy store (where you can see the claw aliens machine in the background). Nice touch controlling the mechs, too. No word on whether toy Sora will freeze around humans yet, although judging by all the fire works going off there it seems unlikely.