We stayed at Pop last Nov on an adults-only trip with my sister and BIL. We had linked our reservations, but didn't request connecting rooms, but we got them anyway, which was fine. My sister had also requested a king-bed room (I didn't bother) and they got it (it was a HA room, though). We arrived at about 9:00 at night. We did do online check-in. I think your chance is just as good as anyone else's, especially if it's on your reservation.