During the week and arrive about 15 minutes prior to opening. I would ask for directions to the 10 story slide and do that first.

Your kids will all like it. Everyone will fit in most of the tunnels. There are some that are a tight fit but you will have to get on your hands and feet sometimes

We did see couples here too. There is a bar where you can get drinks. Just remember there is a lot bending down and some crawling but it is a unique experience.

I think you should be able to do this in a good majority of the museum. But be aware there are hundreds of tiny spaces to crawl and stoop. So you won’t fit in every space with this equipment. They do offer lockers to use during your visit. For an extra fee.

You will need to physically move around with your 5 year old. A stroller will not work well as you maneuver wriggling with your 5 year old. A baby carrier strapped securely to you might be an option. Much luck and your 5 year old will most likely not want to leave. It’s an awesome unique experience there. Enjoy.

There is probably a parking garage nearby. It is probably closed because of corona.

Agreed with previous answer; easily 5 hours.

Hi, I didn't see any though I'm sure I did see a person in a wheelchair whilst I was there. That said, I wouldn't call it a wheel chair friendly place simply due to the size and nature of the museum.

Unfortunately it is made for climbing and jumping and crawling mostly for kids size. As an adult I even have trouble navigating the right twists and turns in the tunnels. I would not recommend for someone disabled as they might not be able to participate or they could get hurt.