So I've just completed my final test of my Dwellers of the Forbidden City port that I'll be running on Thursday so that I can make some final adjustments based on group composition and it made me wonder "how much is to much testing?". For those of you who GM at conventions regularly, how many times do you test your content? Do you run more than one particular adventure during a convention? Do you have any hair left once you've completed your prep? I'm running three separate adventures this year and I'm guessing close to 16 hours of testing/prep so far with another 6ish to go to finish off Masters of the Forbidden City.