I found some info on Agent Origins at the link below. Looks like it's only for US and Canada at the moment. You have to enter the code in your Uplay client when the game launches "AGENTORIGINS". And about your pre order bonus question. As long as you've associated your Uplay account with the beta you should still get that bonus, even without launching. In case it does not work come launch you can contact Ubisoft support, I heard that they can add that bonus to your account easily :)
http://wccftech.com/free-division-gear-sets-redeemable-code-america/