This week is busier than it looks. West Shore Theatre runs four shows — Frank Zappa Thursday, Sinatra and Minnelli Friday, the Rolling Stones Saturday, and a free choral concert Sunday — and Oyster Mill Playhouse is running Sabrina Fair three evenings plus a Sunday matinee. The 54th Annual PA Greek Fest takes over Holy Trinity Greek Orthodox Cathedral in Camp Hill for three full days, Friday through Sunday. Saturday is the most stacked day of the week: a neighborhood yard sale in Camp Hill, a community vendor fair in Etters, a spring migration bird walk in Lemoyne, a craft fair at Lemoyne Trinity, the Penn State Master Gardeners' annual plant sale over in Carlisle, live music at ABC Mechanicsburg, and a free movie at sunset — layered on top of the Steam Show and library events. Sprint cars at Williams Grove on Friday night. The Kite Festival, a sing-along brunch, and a cat adoption event round out Sunday. And the Adams-Ricci Farmers Market opens for the season this Thursday.