I think you could order the adult meals, but they would be taken off of the adults’ total (yours or DH’s) and you would have a bunch of child meals left at the end. Plus you would run out of CS meals for yourself.
Does that make sense?
For example: If you have a 5 day plan, that would be 5 CS’s per person, or 10 total adult CS’s and 5 child CS’s. If went to lunch and ordered 3 adult meals, at the end of the meal you would have 7 adult credit and 5 child credits.
The really recommend that you use kid’s meal credit for the kids.