The phrase "parade participants" refers to the people or groups who take part in a parade, marching or walking along the designated route. Full definition
Last year the news reports of the Pride Parade where I live showed a float with Christians who say they support LGBTQs, However, it also showed a church in the area where the floats and marchers line up that blocked off its parking lot and access to its property and posted people on the property who said the church objects to parade participants using the public street in front of the church. (redeeminggod.com)
Kings Park St. Patrick's Day Parade participants march on Saturday, March 7, 2015. (newsday.com)
The parade starting point was disorganized, becoming a bit chaotic as press and parade participants swirled around the designated parade start, waiting for the governor, mayor and other electeds but repeatedly ordered to move in different directions by the NYPD and parade organizers. (newyorktrue.com)