In the form I entered way back then, I put I used to play FFXI. If I activate my account now, do I have a shot? It doesn't seem like you can modify your beta form.
The only requirements were that you applied for the Beta, and you have an active FFXI subscription (and, in the case of ZAM, that you have an account on ZAM). They did not
specify that the FFXI subscription had to be active very long.
In fact, if you think about it, this is probably how Square planned it. They put this promotion out, hundreds of people re-activate their accounts just to try to get into Beta, and bam ... Square's got a nice new chunk of change for themselves ;) Some of the people who re-activate may even stick around and play some more now that they already paid for a month and new changes are coming out, many may just say "hmm might stick around for awhile", which is another bonus long-term for them monetarily.
Good move on their part if you think about it. I re-activated, and I'm actually considering sticking around for a bit just to see how things go!