Hey it's me again... Now trying to book my seat for my train from Prague to Wien. I have 2 options: train ticket without reservation (but possible) or reservation without ticket..? What is the difference? (except for the big price change)
Also, why can't I find the Interrail discout in the discounts section...?
Thanks in advance for your answers!
You need a reservation without a ticket. You already have a ticket: your Interrail.
as
don´t know which pass you have
but if you have a flexipass i can suggest regiojet with trains to Budapest,Bratislava & Vienna and quite cheap price from 15€ - 18€ in their low cost category 
no need to use a Travelday of a Flexipass that worths usually 20-35€ (depends on the bought flexipass) and use the saved day for a new destination
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