A glamorous ocean-to-harbor estate in Elbow Cay — part of the Abaco Islands in the Bahamas — has hit the market for $25 million. The sellers are Courtney Cunningham — whose stepfather, Richard Sands, founded Constellation Brands, a Fortune 500 producer and marketer of beer, wine and spirits (including top brands such as Corona, Modelo and Kim Crawford) — and her husband, Max Winslow. It’s near Hope Town’s charming Elbow Reef Lighthouse, built in 1862. The turnkey estate was designed by award-