I know what you said. 30 minute skills, then a 30 minute game because kids have a limited attention span. If you, as a coach, can only keep their attention for 30 minutes at a session, then you're doing a poor job and should have another look at the manual for things to keep them occupied.
As I said above, 30 minutes on skills is poor and a reflection on the coach. 5-10 minutes alone should be on warm ups and stretches.
Fair point although I made sure game time was limited to no more than 15 minutes.
You are working on the theory that a auskick sesion goes for exactly 60 minutes, it does not, some kids will hang around longer to have a kick, some will go earlier, nothing is cut and dried, 30 minutes on skills, 30 minutes for a game = 2 x 15 minute halves, or 3 x 10 min, couple of minutes either side for stretching, warm ups, and a bit of a quick talk on what we will do for the session.
Kids who i have coached prefer a game to skills sessions, who doesnt !!, if you have ever coached I feel sorry for your kids, seeing you limit them to 15 minutes, and seeing you are throwing around labels here, perhaps you are the poor coach ?.
You can actually teach, and the kids can learn far more during game, than skills sessions.