I went several years ago, but if it hasn't changed too much, your 8 and 9 year-old will love it! and your 5-year-old will be able to find lots of fun too. At that time, it was like someone took the idea of an arcade, and just went sooooooo many steps beyond it - lots of virtual reality stuff, things to do together, etc. I particularly remember a roller-coaster simulator where you design the coaster yourself and then "ride" it, and classes on how to draw the characters. - My Goofy is still hanging on my wall!