Well,.. the sakura are in full bloom now, and still no sign of blue tarps!
I've come to the conclusion that Ohanami is pretty much a thing of the cities and towns.
For the first few ohanami seasons I experienced in the countryside I asked my neighbors if they had been cherry blossom viewing, and they just looked at me quizzicly.
The main reason I think is because cherry trees are everywhere round here! In any direction you look there are cherry trees. In fact they cherry trees outnumber the people, whereas in the towns and cities people outnumber the cherry trees by a factor of many hundreds. So, round here cherry blossom viewing is not a special activity, its just something you do everyday.
I prefer the wild cherry trees that are scattered all over the mountainsides rather than the ones planted densely in lines.
But my favorite view is at night.