Hmm, this is the reverse of the situation on the Grand Strand. There businesses close when school is in session, but this closing is because (I assume) school is out of session. At any rate, the Firehouse Subs in University Corner over the old Varsity Billiards and next to the old Stuffy's and Big Bird has closed its doors for "the summer" as of Friday.
UPDATE 6 July 2011: As commenter E points out I have completely misinterpreted the sign, which mearly states that during the summer they close at 9PM.
So, as Emily Litella would say: "Never Mind!"