[Bats]

I have a food allergy and DCL handle it brilliantly. I know DCL have an allergy kitchen and take the food prep very seriously indeed. They provide soy and rice milk, dairy free desserts and they will often make a normal menu item GF and/or DF for you if they can (you order the night before for this, not on the night).

They will prepare food for your children for Castaway Cay too, although there would be plenty of meat/fish anyway if they ate that as it's essentially a BBQ on the island.

Silly question and probably worded incorrectly, but how autistic are your children? I mean, are they verbal, high functioning?
The youth activity areas onboard are amazing, but the spaces can be loud. You can go in with your children on the first day and when the spaces have Open House, but not at other times.

If you go concierge, you should be prepared to be treated royally. The concierge hosts are a breed of their own. There is a FB cruise group called Disney Cruising Concierge and some of the members there will have experience of autism within a ship environment. You'd need to join it's parent group first called Disney Cruising - it's very well run by great admin.

We love concierge, go for it!

I can't comment on RCI as never sailed on them, but Yorkshire T recently did so may be able to chip in with comments.

Joa