what they say:
hey! so sorry to bother you, i just wanted to say that we'll be closing in 10 minutes, but please don't feel rushed! thank you SO much for stopping in today. we always appreciate wonderful customers like you. have a marvelous rest of your night :)
what they mean:
GET OUT OF MY FUCKING STORE RIGHT NOW. I'M DONE. I'VE BEEN HERE FOR HOURS AND I'M FED UP WITH YOUR SHIT. DON'T LET THE DOOR HIT YOUR ASS ON THE WAY OUT.