I am a bartender at the Bellagio in Las Vegas and I think your idea is absolutely brilliant! I would not be surprised to see your bar in one of these casinos. Heck... I might even use your idea when I open my bar! I say you go with your plan. I am sure you could come up with any combination of remedies to combat spilt alcohol and such. Besides, my experience with bars in houses is that they are merely used for a location to store and pour concotions.. rather than a spot to sit and congregate. Any stools at your bar would only damper the view of your beautiful tank and rarely be used anyway. My 100 gal is not under a bar, yet we are always posted up on pillows trying to closely view all of the life.