Associated Press – It’s not often you can use the word “dry” to describe a Las Vegas landmark, but tourists hoping to cruise along the Venetian hotel-casino’s indoor canals are finding them tapped out. The waterways were emptied for repainting earlier this month for the first time since the casino opened in 1999. When they reopen in mid-October, the water will once again appear to sparkle below the hotel’s trompe-l’oeil sky. On Thursday, piped-in Italian music echoed off cement mixers and construction tools strewn around the bottom of the canals that meander through the hotel’s shopping mall. Tourists leaned over…