Day 1: Arrive, check in to a Strip hotel (Bellagio, Wynn, Venetian, Aria). Afternoon: Walk the Strip from Wynn south to MGM, see Bellagio Fountains (every 30 min). Evening: Cirque du Soleil show ('O' at Bellagio or 'KA' at MGM), late dinner. Day 2: Daytime — pool club at Wynn or Encore, lunch at hotel. Afternoon: visit Fremont Street (Old Vegas) for SlotZilla zipline. Evening: fine dining (Joël Robuchon, Picasso, Bouchon), then casino time. Day 3: Day trip to Hoover Dam (45 min) or Red Rock Canyon (40 min). Or: helicopter tour to Grand Canyon (~$400). Evening: another show, late night clubbing (XS, Omnia, Hakkasan). Tip: Strip taxis are expensive — use Lyft/Uber. Most hotels offer free shuttles to airport.