Convention games are an outlier because the focused, short time frame combined with people paying money to be there — possibly be in your specific event, much less being there in general — means you need a directed experience. But for my regular game this afternoon, I did zero prep in the two /1

weeks before. Not even a single note. There was nothing procedural like rolling on tables, it was all off the cuff. Nobody felt disrespected, we had a great game. This doesn't mean at some point in the last two weeks I hadn't thought about the game, so I suppose that's "prep".