I'm aware of the time requirement; however, this is my fourth FIRC and it was, by far and away, the longest and most painful. My complaint about the previous FIRCs is that the quality of information presented was extremely low. This, at least, was not the case with the AOPA FIRC, but it was ridiculously long.The length is not AOPA's fault. It is mandated by the FAA as part of the course approval process.
"Curricula presented for FAA approval consideration should consist of no fewer than 16 hours of ground and/or flight instruction." AC 61-83J
Honestly, the requirement is stupid as hell, but something about AOPA's FIRC was especially long and arduous. I feel there was almost sixteen hours in waiting for video timers alone.