Gotta agree with everyone else.
It'll just be too cramped. I've got a 4' wide frankenpanel and it can feel cramped with 4 players. No way you'll get that around one side of a cocktail.
But, since you've already brought up linear actuators, why not something a little inventive
First, put 2 players on either side. That you can do no problem with a cocktail.
Then mount 1 screen flat, with an actuator to lift it up. Put a second screen under the first, with an actuator to lift it up,so when deployed, the two screens make an upside-down V so both sides can see the same image?
Ok. It's a little ambitious, but it'd be a fun build!