Speaking of Multipliers of CET casinos, Harrah's Joliet, near Chicago, has a Reward Credit multiplier offer, apparently available to all for machines on January 26, 2019 which depends on how cold it is on Friday January 25, 2019 as recorded at Midway Airport and reported on www.weather.com. The colder, the greater the multiplier.
I could not read all the details, including any specific time, but this seems to be Reward Credits and not just Tier Credits like at Ak-Chin's recent promotion. Rarely do Chicagoans hope for bitter cold, but this seems to be an exception for some gamblers.
Here is the URL
https://www.caesars.com/content/dam/...ier-detail.jpg
A screenshot is below.
FAB