As long as he can sit up, he can go on peter pan, it's a small world,..... the carousel (either with you gholding I think, or sitting in one of the carriages, alice's maze is good, there aren't many rides he can do int he studios but he'll probably enjoy animagique and playhouse Disney, not sure about the ratatouille ride......
Buffets are excellent, plaza gardens esp., in my opionion, try to avoid busy periods though - eat at more typical mealtimes, around 12, or 5 pm