Well from March 30th (and at least the duration of Battlefest) premium members will be able to invite non-premium and non-dlc players to the new DLC maps.
If you’d like an invite feel free to message my forum profile or my GT: Crabman2325 
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Enjoy Battlefest!
Sounds like it will be for the duration of the game crabman, have any giant house spiders that you want to let in the squad?
Just a note; If your Premium quits a match, then you quit too.
So if you’re on a 50 knife kill streak and your friend rage quits then you’ll find yourself in the menus.
Probably not as well thought out as a ‘free play’ for everyone weekend.
I believe you end up in the deploy screen and can wait to see if they rejoin.
Edit: Sauce.
Even so…
I am not going to complain for a chance to have a play on the maps, I will still end up buying the premium when i get back at the end of the year, for now, i have tomorrow daytime to find a friend.
Maybe watch this before you part with your hard earned.
