Donald Trump's McDonald's gig was staged? Outlet was closed for the day?

An unverified notice sparked speculations that the entire event of Donald Trump working at a McDonald's in Pennsylvania was staged, with closed doors and vetted customers. The Washington Post reported that the restaurant was closed and the customer whom Trump served were screened by the Secret Service and positioned before his arrival making it clear that they did not by chance arrived and was gobsmacked to see Donald Trump handing them their fries -- they were well prepared.