Thankfully we charged everything to the room. Anyone going via Caesars offer should do the same because in addition to the $100 a night credit with the offer you get, Atlantis may comp some other charges like booze. We checked our statements every day to make sure there were no errors, corrected any, and found at end of stay they had comped us for some extra charges. It was unclear what was going on - whether we were comped for cocktails, or based on my play, or errors, but we didn't complain when they comped extra.