On the Gray Line website for the Disneyland Resort Express, it says that reservations are not required but you must book within 48 hours. What does that mean? I also have a coupon for $5 off from the link that was here a few days ago from the Anaheim Orange County Visitor Bureau, but there is no offer code anywhere on it and when I tried to book on the Gray Line website it specifically asks for an offer code. Help!