Yeah, most likely. I can't remember which event it was, but there were a couple major events where they didn't take the page down, showing they really don't need to. I believe it to be a marketing opportunity. There are millions of people who have Apple products but, since they don't follow the company really closely, they don't know there's an event today. They decided to check the store because they're looking at getting one of the older iPads for a relative and now they see that's something's supposed to change today and when.
That person MAY be irritated that they have to wait until the store comes back up, but I'm guessing Apple figures that's now one additional person that's going to be checking back later to see what the hubbub is about. Might even communicate to others that don't know that "something has happened with Apple's website today". So, the loss in sales during the blackout may be outweighed by the number of "Apple is down" posts that are essentially free advertising