**** RESOLVED ****
While looking at website for train schedule for Amsterdam to Rotterdam I noticed a one month subscription for off peak travel 5.95 euros, significant savings from one way ticket. Sounds too good to be true. It's cancellable any time after 1st month. Is anybody familiar or have experience with this? Am I missing the "small print" somehow? We'll be there several days before and after cruise, all off peak travel times. TIA.