I'd tip 1000$ to the security guard having access to the casino's speakerphones and ask him to give the following announcement everywhere in the casino, at 3am for at least 3 times :
"Attention everyone, this is a special announcement from Chris Mallick. Mr. Mallick is inviting everyone in his room for a free buffet and free drinks. His room number is <Room Number>. I repeat, there is a free buffet and free drinks for everyone in the casino. The first 5 people arriving at his room will also receive a special gift. Thank you, good night".
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