Well current day Coke rewards is VERY poorly handled. Over the past 6 months I have tracked my reward entries, the rules and winnings for each event. I have entered over 300 codes since around July of 2018, which is irrelevant for this topic, but I wanted to demonstrate that my experiences is more than a few days or weeks long. None of the events post any winners at the locations that is listed in the rules. For example look at this: Here is the link to the rules for an event that has ended. At the bottom of he rules page is a link to the "Winners List", included also.
Rules: https://us.coca-cola.com/en/legal/*******/
Prize winners, visit http://bit.ly/2Q2gaLg
In fact I have never seen a winners list that isn't empty:
For a list of prize winners, visit http://bit.ly/2PN7Y1l
Win list: http://winlists.helloworld.com/*******.pdf
Win list: http://winlists.helloworld.com/*******.pdf