As I expected, CET properties on the LV strip are playing follow the leader and are now going to charge for parking. Although, Total Rewards member who are platinum and above will still received free self-parking.
http://lasvegassun.com/news/2016/nov/29/like-mgm-caesars-entertainment-to-start-charging-f/
"According to Caesars Entertainment's website valet parking fees at Bally's, Caesars Palace, The Cromwell, Paris and Planet Hollywood will be $13, for up to four hours; $18, four to 24 hours; and $18 for each additional day or a fraction thereof. Valet fees at Flamingo, Harrah's and The Linq: $8, up to four hours; $13, four to 24 hours; and $13 for each additional day or a fraction thereof."
Comments on the article says plenty!
More Las Vegas hotels to charge for parking
https://ux-origin.usatoday.com/story/travel/nation-now/2016/11/30/more-las-vegas-hotels-charge-parking/94698730/"Wynn said its valet parking fees will begin in mid-December but did not release a date. The charge will be $13 for up to four hours and $18 per 24 hours beyond that."
"Caesars said self-parking fees will debut in the first half of 2017 at Caesars Palace, Harrah's, Flamingo, Bally's and Paris, but start dates were not released."