Besides the questions above, is this your very first cruise? Or first
Disney cruise?
I would do a first cruise in a regular cabin, Verandah if possible, to test the waters to see if you like it.
The shorter the cruise the less likely you are to fully enjoy all the concierge amenities.
When I am going to a Disney park and my plan is to stay there from open to close, all I need is a room with a bed and a shower. If I plan to relax more, go back to the hotel, sleep in late, etc. I prefer concierge/club level.
And it is the same on a cruise for me, if you are not using the amenities because you are all day doing activities or at the pool with a book, why pay for it?
Oh other question: how many ports?