Sharraxaadda

Every weekend very large parties gather at the pique-nique spot. Some are more rowdy/louder than others. They play music on loud speakers, bbq smoke comes through our windows, large amount of trash are left at the site after the partying. This spot in the park is right across residential buildings and this noise nuisance affects residents of the area for several months. Can't a more isolated place in the park be dedicated to large gatherings? And if this is the only pique-nique spot, can't the music playing be regulated?