Originally Posted by
the810
These trains get very crowded in the season, and the capacity of the first class is fairly low. Do get a seat reservation, it's just 3€ extra, definitely worth it.
Unfortunately it doesn't seem possible to reserve seats on this train. I think Tom Tulpe is correct. The DBahn website returns the message "We are unable to offer you any reservations on the service you have chosen" and there is nowhere on the Alex site that offers seat reservations. While searching for a solution I found many adverse reports about the Munich-Prague train and am now reconsidering travel to Prague by this method. The bus may be better. Certainly faster.