To clarify for everyone reading this forum, for those using Viking, I just learned that there is a difference between The Grand European tour and the Rhine getaway in how the low river is handled, For the Rhine getaway there are boats going in both directions so there may be a boat change but not a hotel stay. The other cruise does not have multiple boats available so thus the need for using hotels along the route. So my travel agent assured me that if needed we would only do one transfer and that none of the excursions would be missed.