Nope. I bolted from AA because the 500-mile certs didn't last very long when given out at a rate of four/10,000 BIS miles. I almost always get upgraded DEN-CLE on CO. That's a total of (6) certs RT on AA. DEN-DFW alone cost me all 4 certs RT (644 miles OW = 2 certs).

I ended up having to buy certs in order to fly up front.