Originally Posted by
tarheelnj
+1
I stopped doing auto check-in because of the number of SDC's I had.
Advantages: Higher up the list on upgrades where time of check-in matters, less likely that you show up at the airport late & have your reservation cancelled (30 minutes vs after every one's boarded), and gets you an email with your BP if you can receive & print an email but not have Internet access.
Disadvatage: as referenced above.
I experienced it for the first time a few weeks ago. I'd never seen it before and wasn't sure what I was checking when I said "yes" upon departure, so it sort of took me by surprise. I made it to the gate in time, but considering the huge traffic jam getting to ORD that day, it might well have saved me.