yeah they are 48 hour passes.
had a go last night, and there is a lot about the game which i like, easy inventory management, stacking items that are the same, not having to move items to side pouches inorder to use them. not sure on the amount of time it takes to kill a zombie with a melee weapon like a hammer.
got to a big city and i really like the highrise buildings, it makes it feel like a city rather than a run down town and being able to enter most of the buildings is also a big plus.
i like the movement abilities jumping through windows etc and the fact that zombies dont pass through walls as much.
not sure i like the fact that everyone gets a map by default and that there is a cursor that points in the direction the player is facing, makes it a bit too easy and gives too much information to the player that dayz makes you work for.