You guess correctly, and you are close (about half-way in fact).
Try Cat on a Hot Tin Roof. Tennessee Williams ftw.
You were correct.
No idea what mister Banderas is up to. Standard guess for Banderas + guns would be Desperado, though those guns are way too small for that.
And Olav, really you should watch Butch Cassidy and the Sundance Kid, one of his best IMO.