We met my in laws in Vegas this past weekend. We stayed comped at Caesars. My father in law got their first and he was upgraded to a suite in Octavious Tower for an extra $150/night. We were upgraded to the adjoining room, still comped. He paid for his room. I told him he should ask about comps at checkout, but was not around when they checked out. He got nothing. I know the played lots. He was on dollar machines for long periods of time for the entire trip. Basically, if he wasn't sleeping or eating, he was sitting at a dollar machine. Should he have gotten a host and asked that person for comps on the way out? Is that the proper procedure.