Obviously, registering for the alpha does not mean you will be granted access, but not registering is an even better way to guarantee you’ll miss out on the early testing phase. Keep in mind that this is an alpha, though, so you shouldn’t go in expecting the same experience you’ve been enjoying in Battlefield 1 for the past year. There’s likely to be some kinks the developers still need to work out, some functionality might be missing, etc. But that’s kind of the point of an alpha and beta testing period. This is DICE’s way of having the community come in and help them shape a better experience. Also, if probably goes without saying, but all of your progress, unlocks and the like will be totally wiped after the alpha phase is complete.