Think the crossings premium outlets upstate ny will have any? (wonder how much the shirts are?)
I think it may depend on how much traffic the outlets have. Ever since Deer Park opened, the Tanger Riverhead site traffic dropped during the winter and early spring because people dont have to drive as far east to get to a Tanger. Having said that, the clerks told me these have been on sale for a few months as they liquidated their stock and they only had two in a 41 (my size) and none in 42.
It may be worth your while to try the Foxwoods, CT store, but regardless call the stores first as to stock (unless you are not looking for something specific).
BTW - I did not see any clearance dress shirts in Riverhead.