Scottsdale, Ariz. — On May 29, P.F. Chang’s reopened its Atlantic City, N.J., location as an upgraded flagship restaurant. After 3 months of extensive renovations, the long-established Atlantic City location reopens as P.F. Chang’s first flagship restaurant on the East Coast — and third in the country. P.F. Chang’s newest flagship restaurant at 2801 N. Pacific Ave. originally opened in 2004. The 6,137-square-foot space, which spans two floors and seats 186 guests, underwent an extensive renovation, resulting in significant upgrades to design, décor and ambiance. “P.F. Chang’s prides itself in …