Another vote for the double dip. We did concierge once when the price difference between a cat 4A and cat V on the Fantasy was only about $500 and, while we enjoyed it, it is not something that is necessary for having a great cruise. The extra premium they are currently charging for a concierge room is not something we would pay for the experience, especially since we have no interest in getting a cabana at
Castaway Cay. I know you said you were looking at getting 2 verandah rooms for the double dip, but booking only one verandah room for the four of you would save you a lot of money. We are now platinum and have always sailed in a single verandah room with our 3 kids and found it was more than enough space for the five of us. Bank the extra $$, and be sure to book a placeholder while you are on board as there is a really good chance this won’t be a “one and done”.