I'm flying from Louisville to Orlando 3-21 and returning 3-26. Right now the Internet fare of $78 is available on 3-21 and Advanced Purchase fare of $140 on 3-26. Do you guys think that a lower fare for 3-26 will be offered? I don't travel very often, so if I go ahead and book and a lower rate becomes available and I cancel and rebook, I doubt if I would be able to use the credit. I'm only needing 1 ticket. Should I wait?