Is there a Ski pass or season ticket that we can purchase for use at multiple resorts such as:
Further, is it better to buy as a family or just as individual purchases?
There is a pass that you can buy that covers these resorts. It’s called the Shin’etsu Shizenkyo Super Value Ticket. Each book comes with 5 tickets which can be exchanged for lift passes and other discounts (like lunch or hot spring vouchers) at each participating resort. You can also share the tickets with your family; you don’t have to buy one book per person.
I hope that helps answer your question!