Cygnet

"Activity date" is how the airline sees it, but beware that the date as reported by the shopping portal vendor can be a "gotcha." From my own experiences of various online vendors, the "activity date" reported can be the date you placed the order, OR the date your order was "received", OR the date your order was "processed", OR the date a transaction "hold" was placed on your credit card, OR the date your credit card company actually approved the transaction, OR the date your order was shipped, OR the date it was picked up (if in-store, for example), OR...etc., etc. And, don't forget time zone differences, too, if your cutoff date is very close (is it the time zone/date of where you ordered, or the vendor's website server, or the vendor's physical store, or...?) In other words, each online vendor may define and report the activity date to the airline in ways you didn't expect. I have seen an instance, for example, where the reported activity date was almost 2 weeks past the actual date I placed the order, simply because a part was on back-order, thus the full order was not "completed" and therefore the credit card not billed until later. Another example is flower delivery, especially if the flowers aren't scheduled for delivery until much later. Buyer beware -- the airline will refer you to the vendor for clarification.