So the game is now live for us and no it does not work the same way. Not easy to get girls at all it seems. And no in game currency for premium girls either except for one you can get from weekly quests and you need 10 of them for 1 girl.
Liking the game, not liking that free players cannot upgrade max number of girls and the like. We are stuck at 50 max and don;t seem to have any decent way of getting the really good girls.