First off, thanks for the quick answers! Wasn't expecting it that fast
Second, thanks for the info, clarified a lot. I probably sounded stupid saying it was misleading, as really it's not, but it was the way I looked at the situation. Anyway, I'll choose a credit-card subscription to activate the account, cancel, and use time cards after my 30 free days are up. It should work, and if not, I'll just have to find out a way to make the credit-card option work.
Thanks again to all for the answers!