when you sign up for it, you check in at the airport...really you can't miss a bus from the airport, they run every 30 mins. As for the resorts, I believe they run every 45mins. When you check in at the airport, you can ask what the next bus time is, just in case. They really don't post a schedule, they tried to have one, but it runs off of the airlines and needs for travelers. Hope that helps