According to Hart Baur from SKUM, Grove Cinema "was the only (movie) theatre in Miami that had a liquor license," which means that if you were old enough to have a drink in 1988 you could have done so while watching The Decline of Western Civilization Part II - The Metal Years.
image via Miami New Times Archives week of August 3 - 9, 1988
The movie is a Penelope Spheeris production (she later directed Wayne's World, The Beverly Hillbillies, and Little Rascals) and features interviews and performances from bands and personalities like Alice Cooper, Poison, Lemmy Killmeister from Motorhead, Megadeth, and Ozzy Osbourne.
The promo for the show appeared in an August 1988 issue of New Times and advertises a post-film, live music performance by Psycho Beach. I couldn't find out anything about them, but here goes the full flyer for the show and a YouTube clip of the first 10 minutes of The Decline Part II. Enjoy...
image via Miami New Times Archives for the week of August 3 - 9, 1988