I have always made my own ADRs......most TAs make them when they get around to it, or have a free moment. Your reservations can be linked to your phone #, so if you are more comfortable making your own.....go for it! (Especially if you want several of the elite ADRs, like CRT or LeCellier)
Two days ago I was on the phone at 7am to make 9 days worth of ADRs.....and was shocked to read that night on the Dis, that several others were unable to get a ressie at a couple of the restaurants I had secured just 12hrs earlier.