Updated:
A scheduled boat gives you a different view of the lakes, with the option of stepping ashore for a walk or lunch. Start with the lake and landing stage you want, then find the actual sailing. Not every boat calls at every pier, and the timetable changes with the season.
Check the return before disembarking, including a train or bus alternative. Compare a route ticket with a day ticket or your pass’s valid coverage. Dining and special cruises can have separate arrangements. Bring a layer for the deck and check boarding access when needed.