The group's activities include organizing social gatherings to watch Welsh sporting events and musicians, and celebrating events such as
St. David's Day. Over the years they have been involved with over a dozen concerts for Welsh
male voice choirs in the Chicago area, including the Pendyrus, Penrhyn, Bangor, Black Mountain, Burlington, Hogia'r Ddwylan and CF1 choirs at prominent Chicago venues. When Welsh musicians visit Chicago, the society endeavours to get them to sign a Welsh flag, the Tafia Flag of Fame. This has been a tradition since 2002. Signatures have included those of Bryn Terfel, Tom Jones, Cerys Matthews, The Stereophonics, Jem, Eddie Izzard, Marina Diamandis, Gruff Rhys, Jon Langford, The Manic Street Preachers, The Joy Formidable, Aeronwy Thomas, and many other Welsh artists. In 2007 the group attracted the former lead singer of
Catatonia,
Cerys Matthews to entertain them at their annual St. David's Day party. In the same year, they successfully lobbied the
Illinois General Assembly into signing into law Bill HR0149, which proclaimed March 1, in 2007 and each year thereafter, as St. David's Day in the State of Illinois, in recognition of the Welsh contribution to the state. From 2009 to 2023 the Chicago Tafia partnered with the owners of the
Wrigley Building, Prudential Plaza, and other iconic Chicago buildings to illuminate the skyline red, white, and green (the colours of the
Welsh flag) on March 1, St. Davids Day. In 2014 members of the Chicago Tafia started the Chicago Swansea City Supporters Club, that meets for games at Chicago area pubs. In April 2019, following the vandalism of the
Cofiwch Dryweryn mural in Llanrhystud, Wales, the Chicago Tafia partnered with the Pleasant House pub to create a tribute mural in Chicago, which has since been featured in the Cofiwch Dryweryn book published by
Y Lolfa, and in an
S4C documentary. ==References==