Okay everyone.......
I'm really not sure what to do about this topic and will ask for specific advice hoping some out there can help.
I currently have ressie's for Mama Melrose on January 20th, a Tuesday for 4:30 pm. The latest they would book and still make the Fantasmic Show.
My challenge, my wife and I really wanted to take the kids, DD's 7 and 13 months, and DS 5, to Sci-Fi Dine In Theatre. We think they will love eating in the cars and the inside of the restaurant. The restaurant opens at 12:00 that day and I have ressie's for 12:10 that day. I personally think doing both of these is to much to ask for the family, let alone, get my money's worth at Mama's with eating only a few hours before.
I've thought about eating a really light lunch, but still don't think this will work.
My other option:

bear with me.....
I have read and researched that the 3rd week of January, the time we will be there is the lowest attendance of the year for WDW. I have considered skipping, or should I say cancel my ressie with Mama's since I have booked it with a credit card, and just go to the show about a half hour in advance?
That's it.... easy question I hope for the experienced.....
Right now, based on reading and researching again, I think I could skip the Mama Melrose meal because I was only eating there for the Fantasmic package. From what I have read, the seats are not that great and the wait may be short because of the season.
It will be 6 adults and 3 children. If I do wait in line, do all 9 people have to wait in line or could a couple of people wait in line for the group? Do they hand out tickets or how exactly does it work?
I sooooooo appreciate in advance any help on this one!!!!!