It's theatrical premiere
I scarcely remember the previews for this...I was only 9 or 10 at the time; we had gone to see THE EMPIRE STRIKES BACK. I duly recall the audience literally mocking the premier -though I didn't understand just why. I think I almost felt sorry for it! (Dad, why are all these people poking fun of this movie? It's Gilda Radner!)
Years later, I'd found an actual VHS release and was shocked to see such talent (Korman, Newhart, Radner) perform such a lowball comedy. Needless to add, our grownups didn't waste their money; they thought it looked stupid.