Can I buy HVV tickets in advance? Tickets are always valid from the time of purchase and cannot be booked in advance. Related articles I wanted to book a HVV ticket for a later date, but now it is valid immediately. Do I get a refund? My bus, tram or train was cancelled, do I get a refund? I accidentally booked two HVV tickets. What do I do now? Can I buy HVV Anschlusstickets with the REACH NOW app? Which public transport tickets can I buy in the REACH NOW app?