Reba McIntyre! She’s the heartland mermaid strawberry atop the made-from-scratch dump cake that is “Barb & Star Go to Vista Del Mar” (2021). Annie Mumolo and Kristen Wiig (who also co-wrote the script) star as Midwestern gal pals at a Florida resort, trying to escape a midlife rut. Hollywood has a complicated relationship with heartland values and sometimes their comic depictions come off as more mean than funny. This one rides the edge between the two, but throws in so much stunt-casting (Reba!) – and a ridiculous, Dr. Evilesque subplot – you end up finding more to laugh with than laugh at.