Ballys AC drink policy$$$

Ive recently stayed at all 3 CET properties in AC (Ceasers, Harrahs and Ballys). Ballys charges for drinks while next door at Ceasers/Harrahs there is no charge for drinks. Anyone know the reasoning for this???
Bally's AC has always charged for drinks at the bar while playing VP (for as long as I can remember).

There are a few that charge for drinks at the bar while playing VP in Vegas. I think the Wynn is one.
Even Wild, Wild West charged for drinks, when they had VP on that bar. The worst thing about the VP at Bally's bar is that there are no decent games. The best thing about that bar is that it is in the hotel lobby, so there is no smoking allowed. It's the only non-smoking bar in AC, I think.

Ned in NYC