Kurobe Alpine Route Advanced Ticket sales

Hi, it seems there will be advanced ticket sales at Detentsu-Toyama station one day earlier (2-6pm) on 14-15th April.

I wonder if they will sell all and left none for same-day ticket sales? I�fm kinda worried because I�fm travelling the Kurobe Alpine Route on 15th April and will only reach Toyama late at night on 14th April

The only section for which advance reservations can be made for travel in eastward direction is the Tateyama Cablecar, and I am afraid it is already fully booked out:
https://tateyama-kurobe.alpen-route.com/ticket/en/?departure=tateyama

Expect waiting times without advance reservations, and go early.