Free Preview Weekend Time With HBO And Cinemax!!! July 15, 2016 Free Samples, Freebies FREE HBO and Cinemax Preview Weekend! Check your cable provider for a FREE HBO and Cinemax Preview Weekend this weekend through 7/18. DirecTV, Verizon FIOS, AT&T U-verse, and Dish Network should be included in this freebie offer. Let us know what freebie offers you’ve found, we love to hear from our readers!