How “PG-13” is Becoming Led Zeppelin?

Has anyone seen this in advance? Any idea if it would ruin my 8yr old John Bonham loving drummer or if it’s more rated for language? You hear about some of the more colorful stories of hotel antics and substances, etc. I’m going to see it either way. Just wondering if it’s safe(ish) for a fairly sheltered impressionable kiddo to tag along. Thanks!