Hey. There s no way they are sold out. They just opened for booking 3 hours ago. On OBB you can buy full ticket sleeper but no tickets available when ‘seat only’. I will go personally to station, maybe they are only few. Couchette lets me buy tho. Error :” One of the legs of your journey could not be booked” just before purchasing.
1st of July: Wien-Bukarest 19:42-15:05
Please let me know your opinion. Thanks!
They're not sold out indeed and bookable. T3 €28, Double €42:
The station will of course also be able to book.
For night trains you must NOT use "Seat only”. Add the Interrail/Eurail discount and then look for normal tickets.
Thank you very much !!
But why Interrail booking does not work tho? 
Maybe because of post regulations being a paper ticket only.
Interrail isn't updated as often + they send some reservations by mail (= 9€ booking fee !) while tickets.oebb.at directly delivers them by email. Much easier and no booking fee too.
It's often the case for a lot of companies.
tickets.oebb.at can sell reservations for Germany, Italy, Austria + most Euronights and Nightjets, all with no booking fee.
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