Here is my thought on standby tickets. When I went to LA last February, my regular ticket was useless since I was not even able to get an Order of Arrival Pass.
If I am going to watch a show with a standy by ticket, what I would do is to line up as early as I could, even two days before the taping.
I went back last April to watch the MDS, and knowing that it is a special episode, we were ready to be in line as early as Friday for the Monday taping. As soon as someone starts the line, we would line up as well.
So assuming that there are 400 people in line for one taping, of which 325 have regular tickets and 75 have standby tickets, assuming 325 Order of Arrival Pass will be issued, that would mean, 75 people will not get an OoAP. If I get an OoAP number between 1-25, I have a better chance of getting a priority number even if I just have a standby ticket because definitely, the people who got OoAP either has a regular or a standby ticket. Definitely, the first 325 people in line are not all regular ticket holders. The regular ticket would also tell you that it does not guarantee admission as well.
Good luck and be very early!!!