SBB describes the Swiss Travel Pass with a choice between 1st class comfort and standard 2nd class. Schweiz Tourismus price tables show the same class columns as product SKUs — structure only; AlpsDay does not copy fares. Our Swiss Travel Pass overview covers the product family. Day-count structure sits in 3 vs 4 consecutive days and Flex vs consecutive.
What class changes on board
Schweiz Tourismus and SBB service pages describe qualitative differences between classes on SBB trains. First class is framed with wider, individually adjustable seats, more legroom and lower seating density, plus extras such as power sockets at the seat and coaches with quiet or business zones on selected services. Second class is framed as slightly lower comfort and amenities with narrower seats and higher density — still with restrooms and luggage storage on both classes.
On boats, first class is usually described as the upper deck with a view. Amenities vary by train: SBB points readers to the timetable for which services apply on any selected departure. Absolute claims such as Wi-Fi or a quiet zone on every train are not hardened here.
Class is comfort — not a different Pass
Pass coverage categories — unlimited train, bus and boat on a valid day, local transport in more than ninety towns, museum admission as listed, and the named included mountains Rigi, Stanserhorn and Stoos — are product benefits, not a class essay. Choosing first or second does not invent a different mountain-inclusion list. Plan legs on sbb.ch via getting around.
No fare verdict
AlpsDay does not print class price deltas, percentages or a «worth the upgrade» verdict. Match the comfort layer to how you want to ride; treat the Pass day menu and Flex vs consecutive as separate structural choices.