Just dinged lvl 53 and I'm at 223 aa's. I'm taking a slower route and working in so many different zones. Max aa's is 250, right. What happens after I max. I still don't wanna level to quickly.
You can still move the slider to put xp into AA, even if you can't earn AA if you want to/don't mind, burning the xp up into nothing.
Top of the aa screen is a slider you can move to change the % of experience that is going to aas instead. However as people have said if you're ftp the slider is set to 50%. You can only move ut if you have all access (a subscription).