https://www.siliconvalley.com/2021/08/16/mountain-winery-warfield-to-require-proof-of-full-vaccination/

Concert heavyweight AEG Presents has announced it will soon begin requiring music fans to show proof of full vaccination in order to enter its many venues and festivals.

The presenter joins Live Nation and Another Planet Entertainment in demanding that ticketholders submit proof of vaccination or negative COVID test. Although some of the specifics in each policy might differ, those who plan to attend concerts this summer and fall should know that at most venues they will almost certainly be asked to prove they have gotten a full vaccination or tested negative for COVID in the last two or three days.