I work at WCC...
OP, yes you can ask for white meat chicken for the kid skillet.
GC&S, sorry you were told you could not sub white meat for the chicken legs in the kid skillet, I do it all the time for my tables.
sharadoc, doesn't matter if everyone at the table gets the skillet, the kids get their own little skillet on a Mickey plate. I personally don't have a problem with a kid ordering a skillet and then eating some extras out of the big skillet but if they order a non skillet meal, they are not suppose to eat of out the skillet.