The stay at Tateyama kurobe alpine route

I was purchase the tickets round trip from Tateyama station to Kurobe lake on 21 April. May I know where is the suitable place to stay a night ?
The round trip tickets can be claim at the next day 22 April or not ?

It has been shown that the ticket is valid for five days. I think it's also available April 22.
http://www.alpen-route.com/en/faq#transport
There is the choice that your stay at the hotel or lodge in the middle of the route.
http://midagahara.alpen-route.co.jp/english/
http://h-tateyama.alpen-route.co.jp/english/

I think the number of accommodation is so limited in the means described above, it is preferable to that by descent, look for it in Toyama Station is good for you.