Mid-Credits: Yes, sets up sequel
End-Credits: Yes (Throwback to DCEU)
Review: A kid who becomes a superhero after saying SHAZAM? Well it definitely captured the essence of a kid trying to be a superhero as a fully grown adult. Its not a "dark" movie and has a lot of DCEU throwbacks and possible new directions. Lots of humour and language involved.
There IS a Superman cameo at the end, but the head is removed, so there is no way to know if this is Henry Cavill or not.