Here is a link about Celebration: Celebration
I found on their website that:
Shuttle transporation [B][I][U]available for purchase[/U][/I][/B] to WALT DISNEY WORLD® theme parks.
It looks great, but remember there is a $12 per night resort fee. Also, I do not belive it is Disney operated.
I think I would rather stay at Disney- if you are looking for a great resort at a great price, rent DVC points!!