We had very good organization and very good GMs. I can see how this could go south in the wrong hands.
The time limit for us was 4 hours, which left our poor GM scrambling to get the information out and made RP a little more difficult. We managed, and we had fun, but the time crunch definitely favors quick and decisive action over careful planning.
As I said, we played 10-11 and we had one very optimized skill monkey and one very optimized archer. This allowed us to trivialize a lot of the challenges. Less optimized characters and parties will likely struggle.