KidsQuestMuseum has its pros and cons, I guess. I went on a Thursday (11:30pm-1:30pm) and this was my experience.
PRO:
Location. It's conveniently located off I-90 and I-405. Park by Mervyn's.
They are inside the Factoria Mall, which has Old Navy and Target, so, Moms can leave the kids with Dad for awhile and get some alone time. Or, do a one time stop, shop, eat and play all without hopping back on the minivan!
Science. I like the water area for the kids. Reminiscent of the stuff covered at the Pacific Science Center, you get both attractions covered in one place.
CON:
At first, I thought paying $6 for kids (1+) in addition to adult admission ($6) was too much, but compared to Children's Museum of Seattle ($7.50 kids 1+ and adults), I guess the admission is somewhat fair. But, it feels like you are getting half the attractions. I would look out for a coupon. I've seen it in a publication somewhere.
I commented on the nice location, well the downside is SPACE, it felt cramped in there. For going on a weekday, it was way crowded!
I did not have a good experience because I felt I was on top of the other people. BUT, I would go and give it a second chance - not totally rule it out. Go on a Friday between 5-8pm when it's free admission! ( http://www.kidsquestmuseum.org )
more