a couple of months ago!!!
I hope this makes since:
We had 4 people in our room--me my hubby and our 2 sons that were counted as adults--
each one of us had a room key--since these are also used as our park tickets.
My hubby kept up with everyone's card
So our room had
24 TS--One for each of us for our 6 night stay
24 CS--Same as above
24 SC--Same as above
*Always check your receipt, this will have how many credits you have left for that particular service
EXAMPLE:Our first meal was DTD-Earl of Sandwich-we each got a meal and the EOS is a Counter Service--so when we got our receipt it said 20 counter Services left
In my mom's room--we had mom (1 adult) and my daughter and neice (2 children)-so YES hers was always broke up like that:
She had 6 Adult CS and 12 Child CS so her receipt said:
5 Adult CS and 10 Child CS left
I don't think all CS are lumped together--when we ordered--they knew we had to get a child's counter service meal
IT was our first time on the DP and my husband was soooo surprised
at how easy it was

I don't know why I had been telling him all along that it was EASY!!!!!!
Have Fun--oh yeah if you want to charge to your room--you can put that on one key only!!