You F'ers ask compelling questions.... couldn't stay away.
Each session should pop completely differently, otherwise what would be the point?
I may not be a Cheap Bastard, but value is important. Besides an NDA I make my ho's agree to an SOW. In this business transaction (Strategic EXtertainment for Money) both parties should know up front what to expect, it's only fair. Almost everything great in this world started out as a documented plan.
Here is where that SOW checkoff list of acronyms is important. The biggest difficulty is keeping hold of the pen during the full session. There needs to be a voice activated cellphone app for this. The second problem is a lack of acronyms for those with a creative bent.
Carry on.