Temporary Restroom Queues (仮設トイレの行列 - Toire no gyōretsu)
The notorious, massive bathroom queues that form in front of permanent and temporary toilets during cherry blossom festivals. Due to cold beer and cool spring air, waiting in line can take over 30-60 minutes.
Occurs because hundreds of thousands of picnickers consuming alcoholic beverages gather in local parks, overwhelming the public sewage capacity and generating extreme bottle-necks.
Do not wait until the last minute. Head to the toilet when you are at 50% capacity. Your best defense is utilizing the station or mall restrooms before stepping inside the park perimeter.
Where is the most notorious bottleneck queue you will face during a crowded Hanami picnic?