The game gives you enough chances to swing your alignment one way or the other, that you actually have complete control of your ending until very late in the game.
The only thing tricky about it, is that the game doesn't give you a numerical indication of your alignment, and the window for Neutral is so small. --- http://i.imgur.com/YG7JD.png Official Zexion of the Kingdom Hearts III Board
Neither of those things would be problematic, by themselves. The fact that they are both true, is what makes getting neutral difficult. That is the problem. If the window were larger, you wouldn't need a numerical indication. If you had a numerical indication, it wouldn't be a big deal having a small window. --- http://i.imgur.com/YG7JD.png Official Zexion of the Kingdom Hearts III Board