I usually follow the Exit-EU rules as guidance: if it's international and more than 4 hours, I will complain granted that it's not a blizzard. I also respectfully request the compensation then because it either me or my employer who is paying for that delay. I don't think this is out of line because if the situation is reversed, AA is following procedure to the letter. I did a couple of European mistakes, such as putting in 1/9 for travel on September, 1st instead of 9/1. I then caught my lapse a day later and was naturally charged the change fee.

The little things I usually just file away, like not having your pre-ordered meal available for you or delays less than 2 hours. I am also fairly ignorant towards baggage delays when coming back, I have had the very same stupid delays on both, DL and AA when flying into SAT. With DL it was so bad, that they usually had the tag with my home address already attached to the bag and the courier driver knew me by name.

In general, I found the AA response time leaving much to be improved. Even though I never complained or even flew AA, it took more than a month to get a response to my first complaint.