Just wanted to mention that in your original post you talked about spliting an adult's meal between 2 kids (which works well), but on the
DDP will your kids be on the child's plan or adult's plan. If on the child's plan, the kids meals are not very shareable. When traveling with our 2 and 4 yo grand daughters, we always buy them each their own kids meal because they are not big at all. Same for the CS meal (4 nuggets?). If you're sharing your adult meal with them, that might help, but our little ones do not like the adult food and spices/sauces. Both can gobble down a kids meal with no problem, esp. the 2 yo. One place that does not allow sharing while on the ddp is beaches and cream. Not sure why. But we eat at B&C all of the time and always share, but we are TiW folks not DDP folks. (Sometimes we do the DDP for short trips but never trips lasting a week or more.)
Also, if you do share meals between the kids, don't forget to allow for the expense of purchasing an additional desert -- not something kids really like to share with each other!