I was hoping someone who does the job fairs would answer this, but I'll try.

The purpose for the fair is to get invited to an interview, right? And I seriously doubt they are going to schedule an interview for you when you don't meet the mins. Even if it's 4 months out and you're flying 95 hours a month I don't think they'll chance it.

Because on interview day, if you somehow slip though the cracks and get there without the mins, (and this has happened by-the-way) they will NOT hire you. And then you're waiting 6 months to try again. They hold the line on the mins.