You can not book a Fantasmic pkg on line. You must call and specify you want a Fantasmic pkg. After I called and got mine for my May trip, I went online, put in the confirmation number, pulled it up, then emailed it to myself. It looked just like this:
Mama Melrose's Ristorante Italiano Fantasmic at Disney's Hollywood StudiosTM
When you pull yours up online, if it doesn't have the word Fantasmic in it, then you have just a regular reservation for Mama Melrose and will need to call to see if you can still get the Fantasmic pkg. Mama Melrose is the hardest one to get out of the three restaurants offered, so usually go within just a few minutes of them opening up the ADRs. Good luck!