Questions about reservations supplements Hi, i’m planning a trip through multiple countries (Austria, Germany and Italy). When planning out my train schedule in “book reservations” for trains “included” in my pass I’m sometimes met with:1) “You’re ready to board” 2) an extra cost (example: for a night train (nightjet) from Cologne to Vienna) 3) “You're ready to board, You can buy a seat reservation if you like but it's not required.” 4) “+ Additional supplement required, You will need to pay an extra supplement at the station or on board the train.”I’m wondering what these mean exactly.Does “1)” mean i don’t need a reservation or anything else and can just show up and hop on at the station ?If I pay the extra cost for “2)”, I will be sent an electronic ticket. Is that enough in combination with my pass to board the train ?For “3)”, how do I know if a seat reservatiion is necessary (to avoid finding no seat on a full train)? And just to make sure, for “4)”, Am I right for thinking the ticket person will just ask me to pay a
