We eat at Narcoossee's every year and it has become one of our favorites. (The California Grill is our most-favorite!) Food is quite good-we have never had a bad meal there. Primarily, we order seafood because it is very fresh, however they have a good non-seafood selection as well. Desserts are excellent and huge! If my memory serves me correctly the Electrical Parade shows up around 9:00. If you can get a window table, you will be able to see it from the restaurant. To hear it, you must go outside onto the deck.
IMO, the atmosphere is more casual than the California Grill and I don't mean that in a negative way. The decor is dark wood with a high ceiling and can be very noisy when it is full.
I would consider it a more than acceptable alternative to the California Grill.