Hi, may I use my Saver Day Pass for buses, trams, boats & Cruise within Switzerland?
The Saver Day Pass is valid for city transportation. For boats, it depends on the lake. Kindly see the SDP validity map: Saver Day Pass – book earlier, travel cheaper | SBB → Section Downloads. → Synoptic Map
If you tell us which lake, we can tell you whether the SDP is valid or not.