We are taking advantage of the dinner package at Brown Derby next week. For us, it makes sense because we are a party of seven and one of us is a baby. I don't want to wait in a long, crowded line for 1 1/2 hours with a baby, so we absolutely think it is worth the $$$. My DH and I have seen Fantasmic before both with and without the package. If you don't want to waste time standing in line, go with the package. I don't really think there are any bad seats for Fantasmic. I just prefer to be towards the back of the ampitheatre. I think you have a large scope of what is happening. Also, I recommend the package if Fantasmic is only being shown one time a night while you're there. When we were in WDW in June 2001, they were showing it 2 times a night, so we went to the last show, but went at the last minute and had no wait and no trouble getting a seat. I think that this was b/c it was June and it was shown 2 times a night. In December when we were there, I think there may have been three shows a night, and even though we went with our June 2001 strategy, we still waited in line for a good hour.
I say do the package. It's well worth the $$$ in my opinion!
Have a great trip!!!!!!!!!!