Hello Travelers - We researched the train schedule from Praha to Wien on both the RailJet and OBB sites (same train). One site says "Restrictions on this Route" in red, both for a current date (for comparison) and a later date a few months on. Google did not yield any info on route restrictions.
Also, RailJet will not let us book this early but OBB seems to allow booking now. The price difference is tiny. Since it is a popular route, but knowing we will be traveling a few months after the summer rush, do you recommend booking now because the prices are lower now and will only go up closer to our travel?
Thanks everyone.