Originally Posted by
northernstar84
Why to wait for the 15th when it starts on the 14th?
I will do all "free" hits on the 14th
Because it costs you absolutely nothing to wait. The bonus miles will post in two weeks whether you do it on the 14th or the 15th.
There is zero downside to waiting, except I suppose some modicum of psychic satisfaction if you're hugely impatient.
By contrast, there is potential downside to diving in too early, given potential uncertainty about when exactly the promotion will start and what kind of clock partners are using to report transaction date. Last year it was only a problem with one partner, if I recall. The year before, it was a bigger problem with some of the partners posting a day earlier on transactions.
If you have a car rental tomorrow, I can understand. If you're just impatient about getting the free hits that can be posted at any time, well, best of luck. I hope it works out for you. It probably will.