I don't have albino BPs, but my albino garters definitely don't seem to see as well as my non-albinos. They rely a little more on their vision than BPs do though.
I watch with a pair of tongs ready to intervene until the rodent is dead- usually less than two minutes after the rodent gets put in. Once it's dead I close up the enclosure and let my snake do her thing. All in all, less time spent than trying to get some of my more picky f/t eaters to eat. I don't pre-scent the room or anything. My BP is the only snake I have that eats live, so I've only got a year or two worth of live-feeding experience, but there has never been more than about 60 seconds between the rodent going into the enclosure and her striking it, and she's had some less than ideal strikes, but never to the extent that she can't still coil and kill the prey. I'm sure some people don't monitor the feeding that closely, but when I give someone info on live feeding I recommend monitoring until the prey is dead. If someone has enough experience with live-feeding that they don't feel the need to do that, then that's up to them, but for people new to it I always recommend watching until the prey is dead.