Night of the Iguana
Set in pre-tourist Acapulco. A bus tour including Richard Burton, -de-flocked Episcopal preacher, bus driver/tour guide, alcoholic as Lawrence T. Shannon. Debora Kerr as spinster taking care of aged poet father, nymphet Sue Lyon with a screw chaperon. The bus breaks down in the jungle and the group wind up at a tourist inn operated by Shannon's old friend Ava Gardner and her husband who is in one scene (maybe).
That is the set up. This disconsolate group stranded at an Inn in the hot jungle. Sort of a "Casablanca" in the jungle, but instead of Nazi's the demons are internal. The acting is excellent and so is the dialogue.
The only special effects are natural.
Some pulled quotes:
Hannah Jelkes: There are worse things than chastity, Mr. Shannon.
Lawrence Shannon: Yes: lunacy and death.
T. Lawrence Shannon: I thought you were sexless. But you've just become a woman. And do you know how I know that? Because *you* like *me* tied up! All women, whether they wish to admit it or not, would like to get men into a tied-up situation.
T. Lawrence Shannon: I'm panicking!
Hannah Jelkes: I know that.
T. Lawrence Shannon: A man can die of panic!
Hannah Jelkes: Not when he enjoys it as much as you do, Dr. Shannon.
Hannah Jelkes: Who wouldn't like to atone for the sins of themselves, and the world, if it could be done in a hammock with ropes, instead of on a Cross, with nails? On a green hilltop, instead of Golgotha, the Place of the Skulls? Isn't that a comparatively comfortable, almost voluptuous Crucifixion to suffer for the sins of the world, Mr. Shannon?
Maxine Faulk: So you appropriated the young chick and the old hens are squawking, huh?
T. Lawrence Shannon: It's very serious. The child is emotionally precocious.
Maxine Faulk: Bully for her.
T. Lawrence Shannon: Also, she is traveling under the wing of a military escort of a butch vocal teacher. The Night of the Iguana (1964) - HQ Trailer