I'll be honest, I haven't started playing ~yet.
All I've done is look at my mates game play and I must say ~Looks wayyy better then wow (Except the pvp part).
If you wish to start playing, you can only max make 2 charcs and once you made 1 the queue after 5.00 pm Uk time = 500.
It will go up by 100 ever 10-15 mins that you later on log. So my suggestion is, fix your self a NOT-go-afk-for-longer-then-40mins after you logged in.
I hope I gave you some wise tips, have fun with Aion and let your questing begin (or something like that).
-Amstelkid.