“Can you even call it a reunion if it happens every year?” Mr Z asked, saltily. This might have indicated that he didn’t want to come to the Williams family reunion, but he had Covid so he couldn’t attend anyway. I have to assume, therefore, that it was a genuine question. Here is my genuine answer: yes, you can.
The first time it didn’t happen was 2020. The first time it happened in my house was 2021 (almost no one came). The first time it was catered, in a pub, was 2022.