Despite anticipating half a million tourists flowing into McCarran International Airport this holiday weekend, casinos are hedging their bets and offering discounted tickets to ensure full houses to their shows.

Bette Midler's The Showgirl Must Go On at Caesars Palace has a $50 ticket offer, if you buy a mezzanine seat at the regular price. Use code BETTE50 at Ticketmaster. Expires July 13.

Spamalot at Wynn Las Vegas has a 2-for-1 ticket offer for locals. Purchase one ticket for $89 or $69 and get one free. Call (702) 770-9966 and give the code LAUGHTER. Expires July 12 (the show itself closes a day later).

Finally, Cirque du Soleil has 35 percent off select shows of KA (MGM Grand), Mystere (Treasure Island), and Zumanity (New York New York). Dinner and show packages are available for LOVE and O. For more information and to purchase tickets, visit Ticketmaster. Expires Aug. 31.