I just changed it in just over an hour, but I used an air ratchet for the alternator bolts.

17mm socket to release the belt tensioner, remove the belt from the alternator, then 11mm 12 point socket for the 2 alternator bolts.

You have to jack up the front of car, remove the belly pan (8mm) and then a 12mm to remove the alternator wiring. Once the 2 alternator bolts are out, I was able to rotate the alternator to where the wiring was facing the bottom, then the wiring was accessible. Goes back in in exact reverse order.