To strengthen your argument, you need to provide a machine that will wash and refill a coke bottle. Otherwise you are simply sending some glass to the landfill (lazy customers) and some to recycling.
Most soft drink bottles still say "non-refillable" on them, even though no refilling services exist, even if you wanted to.
Even more, most people agree that it is "tastier" (just because it keeps cold better I suspect, and I hope it's not because something from the plastic container seeps into it!)
It then chills the bottle. It could do this by pumping refrigerated water into the bottle and then extracting it again.
Finally, it rolls a label onto the outside of the bottle and fills it with a refreshing beverage. Optionally, it could then seal the bottle.
This machine is then installed like a vending machine, but with far greater capacity (it could mix drinks with filtered water on site) and lower cost.