From researching this, as we're staying here in august, i believe bus number is 54, a pink bus? And I think the run from 7am to midnight, but I'm not sure if this is everyday or just high season
its every day, the buses actually start running at just after 6am to all the associated hotels (including the Kyriad) and the last bus runs at either 11.30pm or later (your hotel can tell you when you check in, and also there is a poster put on the side of the bus stop at the terminus for the parks so you will know).