I estimated it. I think the majority of my ratings, reviews or ticks comes from festivals, even though I dont visit that much festivals (anymore). I prefer doing ticks/private reviews on festivals though and keep the proper ratings for when I have the time to enjoy a full bottle at home. Festivalratings are pretty non-informative most of the times.
I was at festival on Saturday and only managed 22 rates since had to be responsible. However there were 25 breweries I hadn’t tried there and mistakenly missed 3, that will haunt me until I capture them. Typically I do one or two festivals a year at most.