We are booked on Celebrity Constellation in August, sailing r/t from Ravenna; we booked flights to/from Bologna because it's closer than Venice. Looking for suggestions on the best way to get from Bologna to the cruise terminal in Ravenna. We arrive the day before the cruise so could either spend the night in Bologna or Ravenna. Car rental looks to be around $300 for a day! Train could be an option but no direct line; need to transfer in Rimini and trip takes about 3 hrs 10'...