I would certainly advise against this.
Your SO would need to be listed on the room if that person is going.
I was only testing as someone said only 2 of their kids would be free.
A lot of families that own
DVC have larger families and I was thinking that is not right to penalize those families with more children or those that are single parents with multiple children but in this case Disney seems to actually do the right thing here.
I hope people are honest to not ruin it for those that need it.
Unfortunately for us DS is classified as an Adult even though DS doesn't even come close to finishing a kids meal.