Public Holidays/Long Weekends in Japan

I have booked a day trip to Nikko on a Friday (intentionally booking it on a weekday as opposed to a weekend) but only JUST realised that the following Monday is a public holiday! Do you think our day trip on the Friday will be as affected as the Saturday/Sunday/Monday long weekend? Please tell me I will be lucky and miss out on the shit show that will be Nikko that weekend :')

by bingbanggggggg