David-We have always left the front door open and no screens pulled on the door to the atrium. This trip has been no different. Not sure which 'four legged guys' you're talking about? I've got to assume that if people leave the a/c on and leave, that the maids will turn it off when they come in. I do worry that the prices will necessarily have to go up, but it is amazing to me, how much bigger the place is, and how much more usable space there is now! And a/c in the evening to watch TV is just great!