For my wife and I, the Phantasmic package is a peace of mind thing. We plan our trips out months in advanced, so we do not want to get there and have a hard time. With anything. It is nice to be absolutly sure we will get a seat.
We usually go the first week of Oct, and twice we noticed we got better seats arriving almost 30 minutes before showtime then we would've gotten if we went through the front gate. YMMV.
Now, IMHO there is only one resturant, Brown Derby, that is worth eating at out of the three choices. Fortunatly it is my favorite resturant. So we pay the price.