When I had a soda package, the Haven bartenders who knew my preference would sometimes hand us Coke Zero cans. Generally, I just asked for Diet Coke which was available from the soda fountain gun.
We were regularly getting soda in unopened cans from the casino bar with our 'free drinks' in casino card....and a nice tip😉. These cards were discontinued with the change to the CAS program on April 1st of this year.