Why would you lower a bar? No more service if the bar is leveled or beneath the official norm.
Rolf, It's a term that is used to saythe bar will be closing soon (or not)
"The bar will be closing soon" = it's closing
"The bar will be lowering soon" = It's closing
"The bar will be closing soon, but not lowering" = The bar is closed if someone official asks, but in reality we will be open until we decide it is time to lower the bar.
