I need 2 more stays to make Diamond and don't have any more planned travel. If I book a room at the local Hyatt, checkin and leave do I need to be around to check out or can I assume they will just charge my cc? I have never not stayed at a hotel I paid for. I did a search but could not really find the exact answer I am looking for.

Basically I don't want to spend the money if I don't get credit for the stay.