I can really relate to what you are saying. We also recently took advantage of the low deposit. We are not new to cruising, and thought maybe we would try Viking Ocean. The itinerary we booked is actually costing twice as much as one we would choose on Princess.
Yes, I know there are many differences; maybe like apple and oranges. It just seems like a long time to have the full payment when we could be earning interest on it and not the cruise line.