Preload Possible? If ordered through GamesPlanet

Hi

I really want to pre-order Assassins Creed Origins from here. But will I be able to preload the game (assuming preload is allowed by developers a couple of days in advance) if I ordered through GamesPlanet?

Will GamesPlanet deliver the key to me as soon as the preload is available or will they only give key on launch day?

All replies are appreciated. Thanks