Does Xfinity require Covid vaccination cards to get in?

They didn't at last nights show but they will at the next show, next Saturday.

Yes

For certain shows they do.. they didn't for Staind & Korn but will for Slipknot

Depends on the performer

Depending on the artist

Yes for Farm Aid probably for all

Yes for farm aid

Yes or have tested Negative for COVID with 72 hours prior to entering.

Yup