We have done it twice, but the last time was about 3 years ago. The VIP seating is included. I do recall being able to use the DP for it. The thing I remember most about it was that we had to eat so darn early. The show was at 8, but our "dinner" reservation was for 3:45. They handed us the VIP card (good for our entire party) when they brought the check. And at that time anyway, we had to show up for the VIP entry about an hour before the show down by the main entrance of the Studios, at the Oscar's Filling Station, which I believe is the stroller rental place, but I could be wrong about what it actually is... the place at the front with the tow truck sitting in front of it.
But again, the last time was about 3 years ago, so it might have changed since then. Hopefully another Dad has more "current" info for you Ron.