I echo other folk, I wish they would give a "range" of time when the buses might be arriving "hourly". Like between 11:15am-11:25am, or something....because when you miss a bus, and have to wait for an "unknown time" because there isn't a schedule, that would be upsetting.
But as long as the pre-opening buses can get me there at a normal time, I am fine with it. (though Pop last time had us waiting for a PPO AK bus for EMH for like 25 minutes, which went from arriving at the stop at a decent time to be ready for EMH to stressing that we would have to wait AGES to get into the parks because of our tardiness)