I actually got on the chat on the Disney site and they gave me the number to call the Chase Disney support line. They told me to call Disney at 407-828-8101 after I get my card and said I had to ask for the "Walt Disney Travel Package" in order to get the six months at 0%. They said I couldn't book online to get the 0%.
They're going to overnight the card since I'm trying to beat some timelines here. Nothing like hurrying up for something that is six months away.