Metro North has several different lines: the big three are the Harlem Line, the Hudson Line and the New Haven Line. You can purchase tickets for each individual line, but there are no tickets that will permit you to ride all of the lines. A good deal of ridership on Metro North is for commuting, and people really don t require any sort of ticket for all of the lines.Wassaic is on the Harlem Line, and Waterbury is a branch off of the New Haven Line. So if you want to visit both stations, you d have to buy two different tickets. Really it depends on what your intentions are. Are you looking to sightsee? Do you have time to purchase tickets in advance? If you purchase online, tickets are cheaper. If you want to sightsee, I would suggest taking the ride to Wassaic. Honestly, Waterbury is really not all that interesting of a station to visit. If you want to experience the New Haven Line, I d take a ride to New Haven s Union Station.
Metro North is not like the subway. You need different tickets for different lines. The most expensive on one line will get you nowhere on another line. Just buy tickets at the station for where ever you need to go. One the train is alot more