Hello everyone,
First time travelling with interrail this summer.
I have a 10 days pass, but I still have book 4 reservation, I need a bit of help 
.
I have booked most reservations on the interracial booking website, but still need to book this 4 trips:
Wien Hbf - Prague Hlavni Nadrazi on the 7th of August at 7:10 am. Doesn't let me book on interrail site but I have found tickets on Cd.cz for around 15€ per person, which is fine I guess 
.
Prague Hlavni Nadrazi - Berlin Hbf on the 8th of August at 17:30, or any other time that day, it doesn't let me book on interrail site. If I book on int.bahn.de do I have to pay for full price tickets (50€ per person 
) or can I flag the option "book seat only" (10€ per person)?
Koebenhavn H - Stockholm Central on the 15th of August said tickets available 90 days before departure but now they say that they're unavailable on the interrail site. Stockholm - Oslo on the 17th of August still says to wait 90 days before departure to book on the interrail site. Do I have to wait a little bit for these 2 reservations and keep checking on the interrail site or should I book them already on other sites?
Any help is very much appreciated, thanks a lot 
