I don't follow - what are you saying is a 'full trial'? Do you mean a subscription to the game? If so, that wouldn't be a 'trial', that would be a subscription and trial elements don't apply; i.e., limitations other than not accessing expansion content that you did not purchase.

There are also two subscription models. One you pay a 'full price' subscription where it would allow you to create multiple characters across multiple data centers. A cheaper version (which is what I pay, I have only one character) allows you just one character on a data center (I don't have the time to make so many characters, hah).