There isn’t as much buzz this year around the Great American Beer Festival, which takes place at the Colorado Convention Center on Sept. 21-23, as usual. The annual event — considered to be the largest commercial beer fest in the United States — has had trouble generating momentum since taking two years off because of the COVID-19 pandemic. And while there are usually dozens, even hundreds, of events at metro Denver breweries, bars and restaurants during the week of the fest, 2023 isn’t seeing nearly as many.