NYMR Trip to Grosmont ending in disapointment

During the kids Feb Holiday , I had a look to the NYRM, purchased a steam train ticket to whitby and back. As much as I enjoyed the railway station and engines sheds , I would have drove the car to whitby instead if i knew the steam train had beem cancelled however the ticket sellar stated its definetely steam, disapointed in this trip due to having a diesel