We bought the Deluxe ticket and took the bus on stop 1 (Heroes Plaza) and continued until Budapest Castle. There we made the change to the Castle Shuttle, so far so good. But just before taking the shuttle, the Big Bus person changed the one ticket we had bought at the tourist information point in Heroes Plaza for 5 joined tickets (Deluxe ticket, Night Tour, Ferry ticket, Walking Tour). We then gave those to the Castle Shuttle person and he ripped the Shuttle service ticket and gave us back the rest. Only the rest did NOT include the Deluxe Ticket (we didnt realize it at this point). So when we came back from the castle on the shuttle (which by the way had run out of batteries and was going at literally 5 kms/h) and tried to board the bus, we where told we couldnt get in! And now for the funny part, the guy from the bus accused us of loosing the Deluxe ticket, and that somehow he had one of them that he found in the bathroom (??!!). When we told him we never whent to any bathroom, he accused us of lying, and when we insisted that we only had the tickets that the Shuttle guy had given us, he accused us of shifting the blame on the other fellow!! So much for costumer service!! be carefull and CHECK that they give back the ALL the tickets!! I had 3 days Deluxe lost by them and cant board the bus anymore. I only hope I can still use the other tickets for the Walking Tour, Night Tour and Ferry. Will update this review accordingly.