Michael C. Fina, Park Avenue Wedding Retailer, Bets on Amazon.com
Michael C. Fina helped popularize bridal registries, and its Park Avenue store was a destination for Manhattan elites. It provided silver for John F. Kennedy’s inauguration festivities and catered to the likes of Frank Sinatra and Lennox Lewis. But with foot traffic falling more than 80 percent in the last decade, the writing on the…