We were just there Monday during prime Spring Break and there were open seats in our theater so I can't see how FP would even be worth it. We sat on the side coming in 10min prior to the show and the view was great.
By the way, the FP view is also a side view. The people waiting in standby got the center views.
I would use my FP for TSM, ToT and Star Tours. I would do Fantasmic dinner package at Mama Melrose. The only way I would consider FP for this event is if I wasn't going on ToT or RRC because of young kids. But even when we had young ones, we still kid swapped those rides and rode alone. Too much fun to pass up.