I did it once. I forget the cost, but I remembered it ended up being like an extra 10.00 per person for the package at Germany vs. if I had just paid for the meal at Germany without the tkts. The seats were great, but honestly I would probably not do it again. I have gone since and found seats, not as good, but at least there were some, and I did not have to stand in line that long. It might depend on the time of the show though.
They have a seperate line for those who purchased the package. They give you the tkts at the restaurant, our server gave us ours when we paid. There is a special section for seating. When we went it was towards the left of the stage.