Nova-Ghost, sorry but I deleted a post by KindredAnna. Her post had a link to online game gold sales, and that isn't in your question, so it was irrelevant.
It seems no-one had any information to offer you about your query, and since the 30 days are now up I must assume you have your answer.
To avoid this discussion attracting more spam replies I am locking it.
I bought Final Fantasy XI Online for PC (at a GameStop), so it is going to give me 30 days of free gameplay. When I enter my credit card information, will it automatically bill me for the next month or will it wait till the 30 days are up, then bill me for the next month?