LC is a competent, but not outstanding, steak house. Most moderate-to-large cities will have one as good or better. Between those two, I'd go with CG for the views and more interesting menu.
I really like the filet, cheese soup and pretzel bread at Le Cellier but would choose California Grill for a special trip. If you're gong to be in Epcot that day Le Cellier would be a good choice though......dang, even I can't make up my mind.
Either would be a great choice for a nice "adult" dinner.