Photo by The Polo Party/Dave Siebert   Get Your Equestrian Fix at Polo Party Horses and horsepower are in the spotlight at the Scottsdale Polo Championships, Oct. 23. The high-energy polo party and car extravaganza features several polo matches, live entertainment, a catwalk fashion show, canine couture event, wine tastings and previews of the Barrett-Jackson Collector Car Auction and Scottsdale Arabian Horse Show. Gates open at 10 a.m. Tickets start at $35. WestWorld of Scottsdale,...