There seems to be a huge amount of confusion, even amongst the 2K tech support team.
One person on the official forums rang up and was told that he wont be able to activate until the game's launch on the 24th.
However someone else rang up and was told that the game activation servers are already up and running, so if he has it he should be able to activate and play it already - problems with the auto patcher not withstanding.
They have said the auto patcher SHOULD be up and working again by 1PM UK time.
Apparently someone else was told that the patch and activation servers would both be coming online, so we would be able to activate it too.
no one really knows because no one has been able to finish installing it yet
I think 2K's tech support team need to talk to each other and get their stories straight - it does not reflect well on them if members of the support team all seem to be telling customers different things regarding when they will be able to play the game.
Most wbesites dispatch preorders so you get them 1 day before release, Game have, Play.com have, gameplay.co.uk have, some people have even bought it off the shelves.
So it would not make sense for 2K to not let you activate it till tomorrow - they must KNOW that many people get the game 1 day before release due to preordering it...