Is it just a quick swipe of the card to verify its valid? Or do they actually check names? Assuming I have a total of 4 room keys. I just want to know whether I need to pony up the extra $30/person per day ($180/total ) to have two girlfriends with us. It would be nice to avoid that highway robbery if possible. Is it super strict? I have heard different things. I am not trying to be overly cheap, but that extra $180 can go a long way, but if its necessary I will pay it, so please dont accuse me of stealing your pool chairs ALSO, do they allow bottled (sealed) water into the pool area? Thanks! Last question before take off!