From my first playthrough on PS2, if you plan to defeat the Dark Aeon bonus bosses you may wish to check a guide about getting characters' ultimate weapons as a few will get blocked by dark aeons that must be defeated to get to them if you do not get them by a certain point. I forget the details but I think at least two were blocked off for me. I am assuming that the dark aeons aren't spoilers as entirely optional content...
So is there anything I need to know about FFX before I pick it up tomorrow?
Any tips or things to look out for? I have never played it before and just don't want to fall into any easily done traps such as sub optimal builds or missed quests.