>>97168203"Flintstones on the Rocks" was just that. It starts with Fred and Wilma in marriage counseling and the couple along with Barney and Betty go on a vacation together; the entire time the film compares Fred and Wilma's rocky marriage to that of their neighbor's happy fruitful one. Some cheesecake is had, sexual innuendos with a vibrating bed and some plot about a guy stealing a diamond in is there somewhere.
In all it's true to the source material but with a slightly darker, more realistic overtone.
Just for those who maybe have never heard it.