Double Helix Wine Bar has been voted the best in Las Vegas, and now you can sample some of its finest offerings for only $5. Every Friday from 5-7 p.m. Double Helix hosts a tasting of featured wines that oenophiles should not miss. You’ll receive a complimentary souvenir wine glass and 25% off bottles of equal or greater value than the featured wines. For more information, visit Double Helix online.