
May 3rd: 憲法記念日 (Kenpou Kinenbi) / Constitution Memorial Day
May 4th: 国民の休日 (Kokumin-no Kyuujitsu) / National People's Day
May 5th: こどもの日 (Kodomo-no hi) / Children's Day
This year was great, having 5 days in row to have a wonderful rest. As one of the highest season for trips, the prices go up about 5x than usual.

Japanese don't go to the beach out of the season; the weather forecast was positive and in 5min I decided where to go and got tickets.
Waking up at 5:00am to be seeing this wonderful view in Atami and Ito. Shinkansen last stop in Shizuoka is Atami and it's necessary to take an Ito Line to Shimoda city, Shimoda Peninsula in Shizuoka. As it's too early no direct train is running.
The trip was very good, seeing wonderful views from the train and were very excited to get to the beach...