I am planning on going to Tokyo either on August or December. I have award reservations for both weeks (actually 6 nights with Hilton). I am looking for the air tickets and that will decide if I go in August or December. I want to go to Disney is that "doable" if I am staying at the Tokyo Hilton, the one by Disney was already booked for those dates. Is it better to go in December if I want to see the Disney Parks (Decorations, special activities)?