Hi... we have booked train tickets from Hamburg to Warnemunde on regional trains (after 9am Mecklenburg-Vorpommern-Ticket). These have no seat reservations. Do regional trains have seat reservations? If they do... are there sections for seat reservations and sections for no seat reservations (like in Japan)? If not, how do I know if the seat I am sitting has been reserved? By luck? Can someone help explain? Thank you very much.