The 1,000-plus power players who braved the cold to attend the Real Estate Board of New York’s annual gala Thursday night had a lot to celebrate. Not only did 2024 end with a robust leasing surge, but REBNY’s office-visitation tally posted a post-pandemic record last month. As tabulated by Placer.ai using mobile location data at 350 Manhattan locations, office-building visitations in December hit 72% of 2019 levels, or 5 percentage points higher…