Upgrading Intl after July 1
So I am booking a tix to Greece/Italy for early September and paused and thought to myself that I dont need to buy a "H/M" fare anymore because of the new upgrade rules, whoohooo (I have goten screwed too many times buying higher fare)
My question is do I just book the lowest "S" or whatever and call on July 1st to pull my miles and pay the co-pay?