“Gaming” is the PC term that replaced it some time ago, although when I hear gaming, I think video as in Mortal Kombat. (is that still around?)
My recommendation? There are lots of other properties in town that don't charge for parking because they already know and appreciate that you're supporting their businesses by paying for rooms, gaming, shows, events, food, shopping, and more. MGM just wants a pound more flesh.
Bill came back into the winery, did the classic cut across the throat, and said “Everything is canceled!" Apparently they have this thing about valued customers getting skewered by lightning bolts.