It is very common that people get it from parties and weddings. Like our colleagues a couple visited wedding of relatives,despite of being outside majority of time both still got it.

Many people who against vaccines now saying that those who vaccinated still getting Covid. It is true it is difficult to know if vaccination helped a bit like to have light infection or not.

I am glad that you and your wife recovered and back to normal. By the way couple of my colleagues despite of vaccines and booster had the virus twice. So nobody knows how it will be in future.