Dale DeGroff earned the nickname "King of Cocktails" mixing fancy drinks at the illustrious Rainbow Room during its heyday back in the 1980s. "It was an amazing place,” Mr. DeGroff said. "We had a great, great bar. We also had a wonderful cabaret—Rosemary Clooney, Tony Bennett."
He's excited to see that history restored: "I was talking to Barry Wine, who's here tonight. He's been talking to Jerry Speyer, and they’re looking to the future—bringing...