If you wish to, you can start joining now and set up your gear and test weapons out. Join Madda's "Arma 3 Channel" on Teamspeak and you'll get the server info. We're already a few people on.
As mentioned before, you are not required to join nor stay for the entire thing. Join and go as you like. Hope to see you there!
If this hasn't already gone go-fish, then can you notify people of when you are in-game as it would be useful to know, especially now as my ARMA 3 isn't messing around. Looking forward to some takeovers (if this, after 2 days, hasn't already been scrapped). Cheeers!