On September 16th the Alberta Government announced the Restriction Exemption Program, where proof of vaccination or a negative test result is required for businesses to continue to operate 'as usual'. 

The Calgary Exhibition & Stampede will be implementing this new program effective immediately, and all attendees, artists and exhibitors will now be required to provide proof of vaccination or a negative test result to enter the BMO Centre and the Calgary Tattoo & Arts Festival. 

Please be prepared to provide supporting documentation upon arrival.

The details of the public health action can be found here:
 https://www.alberta.ca/covid-19-public-health-actions.aspx