We went last year and while I'd originally booked regular ADR for the night we planned CP, when the packages were released, I had to cancel my regular ADR and make a CP Dinner Package ADR.
I believe the Dinner Package is worth it because you're almost guaranteed a seat. Without the package, you may not even get in. I'm sure you can see parts of it from the walkway, but it's definitely worth getting in for a seat.
Either way, there is a line. One for those with the CP Dinner Package and one without. We made friends with the people around us so the time went by fairly quickly, but I think we waited in line for maybe an hour.
But it was so worth it! We had Neil Patrick Harris as our narrator and I have to say that I fell in love with him that night.