Advice with Kuomi starry sky train

Hi;
I plan our family trip in August, and I would like to include an evening travel with the Kuomi starry sky train.
I understand that the train finishes the ride at Komoro station at 21:00. I tried to check the accommodation in Komoro, and found that the options are very few and expensive.
I try to check the options for transportation going out from Komoro after we arrive at 21:00 and included with our JR east pass.