Sakura/cherry blossoms are a huge deal in Japan. When they make their rolling arrival every year, moving in a line of blossoms from south to north along the island chain, they are greeted by blue tarps, barbecued meat, and ample amounts of booze. The parties are referred to as Hanami, and they are energetic, explosive events that often lead me to confuse the word "Hanami" (cherry blossom party) with "Hanabi" (fireworks).
Unfortunately, the archaic, turn-of-the-(last)century, repressed sensibilities of our public policy here in Canada means that the only booze flowing at Canadian Hanami events is clandestine in nature. However, if you're in it purely for the sakura, there are few better places in Toronto to take them in than High Park.
This is no secret, which means that the park is taken over for a week and a half by people wielding these: