At Westchester County Airport (HPN), there are (among others) the following two ads:
Westchester’s premiere day spa.
Dominican Sisters Family Health Service
New York’s premier visiting nurse service.
Never mind, for the moment, the pretentious use of
premier — we’re talking about (mostly) affluent Westchester County, NY, after all. But note that the Dominican Sisters got it right, and the day-spa folks blew it:
Premier refers to the best of something, the leading example.
Premiere refers to the first, not the best. And even if
premiere were what they meant, its use in this context would be odd. One might refer to a
premiere offer for their opening day, but this just doesn’t work.
Someone obviously did not use the premier advertising agency.