I’m confused as i want to take the train from bratislava to zilna and then further to kosice but on the timetable it says i need a reservation meanwhile if i look at train types on the interail app it says the trains i would be taking don’t need seat reservation only with 1st class and that besides that they are optional and on the interail site it says too the trains are reservation optional (picture below) so just to be sure i thought i ask to be sure if the timetable isn’t wrong or such

