Cookies are for closers

I'm guessing he means people who close business deals, but I can't be sure. That trailer was long! They're giving too much away again.

It's a reference to Glenngary Glenn Ross, a movie Alec Baldwin appeared in. The main characters in the movie are trying to sell real estate, and he comes in for tough motivation, including preventing anyone from getting coffee, saying "Coffee is for Closers..."