I've booked a Fantasmic package at the Holloywood and Vine before and it was fine. I've heard good reports on the Brown Derby too, but have read some rather less complementary comments about Mama Melrose's.
We have now done the Fantasmic Package twice - once at H&V and once at Mama Melrose. H&V was OK but I wouldn't touch MM with a bargepole again after our recent bad experience - poor food/service - very un-Disney.
Yup I booked this from the UK through the normal PS channels.
We did Hollywood Brown Derby and we thought it was excellent value but then we're little piggies and can normally manage 3 courses so it does work out worth it for us
We had the FDP at Hollywood Brown Derby last summer and it was fab. We had a great meal and then we went on RNR and TOT then right into great seats at Fantasmic.