Working at a movie theater (and basing this on what happens at the theater I work at), the theater at Downtown Disney probably won't know what times Holes will be playing until 4 days or so prior to its release. Granted, the DD theater is huge, so they might know things sooner, but I would say that if you contact them 3 or 4 days before the movie release, they could tell you showtimes.
RyMickey