do they usually ask for an ID/Passport before entering in order to see an concert?

Yes, depending event

No, only when you are purchasing a drink inside.

No, unless getting alcohol

No, you just need a ticket. Unless you're picking tickets up at will call

They do not only abag check for security

Yes

No. I have been to almost a dozen events @ the pavilion over last several years and never had to show a passport or any id.. one event in 2021 i had to show vaccine proof, but, not @ any of this year's events

No they don't unless your tickets are being picked up at the window but if you have paper tickets or your tickets are on your phone then no you don't need ID. But if you bought a premium upgraded ticket you will need ID to receive your goodie bag from the artist was our experience when we went last month.

Yes depending on events