I just booked a flight on AA for next May. My question is how often do schedule changes happen? Most of my recent flying has been on either WN, where they hardly ever happen (and the one time it did, I got a phone call with a live person on the other end, twice) and DL, where they happen all the time (sometimes without any notice at all). So my question is, how much to I have to babysit my flight? Thanks.