For the "What are others doing" list:
I attended a local gaming convention this weekend. No proof of vaccinations, no badge. Some were angry, some went off on social media, one got banned for active social media trolling. By active trolling, I mean he found others who were attending and privately messaged them in an attempt to persuade them. Everyone knew weeks in advance of the policy and you could request a refund.
Everyone who entered through the convention center door was asked for proof. However, since we were in a hotel and located between the pool and half of the rooms we constantly had non-attendees parading through our central hall.
We had ribbons that read "Vaccinated 2021" but they were moot since everyone was supposed to be vaccinated. I just slid mine into my pure plastic badge holder so I could flip it to show my ribbon. Masks were uncommon, maybe about 10%.