>Okay, I am flying out to Orlando for Double Impact on Tuesday at midnight. Who do I confirm the airline ticket with? Airport, airline? Can I do this over the web?

You can usually do this via the web. Confirm that you're actually planning to show up, then print out your boarding pass. Get to the airport a little later than usual, and walk right up to the gate and onto the plane. Sorted. I fly Northwest and Alaska specifically for this reason.