There’s a new concessionaire in town at Fort Lauderdale’s Hugh Taylor Birch State Park — and park tenants have been worrying its arrival will threaten their existence there. The first casualty: Beachfront restaurant Park & Ocean. The picturesque hangout is scheduled to permanently close Dec. 26 after 6 1/2 years in business, owner Steven Dapuzzo told the South Florida Sun Sentinel on Thursday.