I read that the waiver had to be signed when you applied to attend. Not sure if that is true though so MOO.
It’s true.
Attendees of President Donald Trump's upcoming rally in Tulsa, Oklahoma, must agree not to sue the campaign if they contract coronavirus.
Rallygoers are asked to RSVP to gain admission to the event and by registering, they must agree to a disclaimer that states they acknowledge the "inherent risk of exposure to COVID-19 exists in any public place where people are present."
"By attending the Rally, you and any guests voluntarily assume all risks related to exposure to COVID-19 and agree not to hold Donald J. Trump for President, Inc.; BOK Center; ASM Global; or any of their affiliates, directors, officers, employees, agents, contractors, or volunteers liable for any illness or injury," the disclaimer reads.
Trump rally: The campaign says it can't be held liable if Tulsa attendees contract coronavirus - CNNPolitics