The Shows are indoors so should be no problem but the park will be closed by 4pm.. Between 2.5 to 3 hours will be sufficient.

The distance between Niseko and Noboribetsu is about 100 km, but the transportation is not very good. You can not go directly if you use a bus or train.

I took the bus with another 3 adults. Was quite easy and comfortable. Unless you kids are in stroller, you can try the bus. The bus driver are always very polite and helpful.

Several taxis are waiting for customers at the station exit. However, Noboribetsu is a small town, the number of taxis is small. If you do not have a taxi, you may need to call a taxi.

The cab ride from Noboribetsu Dat Jidaimura to the train station is only about 3-4 minutes and cost 960y. We did not want to wait for the bus, so we asked the park to call for a cab. Since there were 4 of us, the fare came out almost the same as the bus, and we didn't have to wait in the parking lot for the bus.

According to the website, you can rent costumes at one of the small shops. I do not recall the cost, and I did not see anyone walking around in kimonos while we were there.

Ninja costumes for kids can be rented at 1050 yen.

Hi, 1. For attractions like haunted house, etc, u don’t have to pay, but games, yes. But I am not sure how much, sorry. 2. Around 15-20 mins each. If you are renting from Toyota, you will get a booklet that has discount coupon for this theme park. I think it is 500Yen voucher. Have fun.

Each show will last about forty minutes. There are about 5 minutes in between so you will hv enough time run into the other show. All shows are interesting except the cat story. You really need to know Japanese to enjoy that show. I really can't answer on the transportation. You may check with your travel agency. Hv fun.