We are going on the Navigator for 4800.00 for 5 people. If we had booked 2 Jr suites is would have cost more and we like having everyone under the same roof. Especially the kids.
There is also a regular family cabin if you don't want to do the suite. It is cheaper. You have to contact a TA or RCI for a price quote for any of these cabins.
I like getting double credit and the balcony.