That is unknown. There is no camera surveillance of him entering the hotel at 6:35 am, but he did have the receipt that was slipped under his hotel door in the middle of the night. There is some conflicting information about whether the side entrance to the hotel was unlocked at 6 AM. The night clerk said that the door was locked 24/7, as it's a keycard entrance. There is also testimony that the lock on the door was broken. Whether that means that the keycard reader wasn't working so the door was unlocked at 6 AM or not ... not clear on that yet. Maybe someone else knows more about it.
I don't see any conflict in the testimony. I think the point was that the side doors were always locked 24/7 and if the keycard reader wasn't working, the door wouldn't open at all from the outside and guests would need to use another door to enter the hotel. All the exit doors were covered with working security cameras. It was impossible for Young to re-enter the hotel after 4:30AM without being captured by one of those security video cameras.
JMO