For various reasons, we have to decided to grab our luggage at the airport and bring it with us on the Magical Express bus for our October trip. We will have 3 pieces of luggage and two small carry on bags. First, can we hold our carry on? They aren't big. Second, you don't tip until after you get off the bus, correct? And I've read about being told to stay on the bus while they get your luggage or something along those lines? Do we wait until driver tells us to get off the bus? Never used DME before! thanks!