Given to 26 month old son as a gift from Granny. Assembly-- definitely the easiest of the three Step 2 products I've assembled (Kangaroo Climber and Clubhouse Climber). All of the pieces and steps are very straight forward and attachment points are easily accessible. As with all Step 2 products I've dealt with, drilling small pilot holes for all of the screws will make the process much less frustrating. Placement- we have ours going down onto thin grass on hard packed soil and the cart goes 20-30 feet past the end of the ramp with a 27 lb occupant. Be sure you set up with enough room ahead. Play- My son (2 yrs 2 mos) was ready to start climbing before I even finished assembly. For his first trip down the track, I held onto the back. The second trip he was hesitant, but then , by the third trip, he was pushing the car up the track himself and climbing in. There is a small groove at the top that keeps the cart in place for the child to load in, and he's still a little too small to be able to push out of that dip to get started. Otherwise, he could go through the whole process by himself. Sturdiness- the only kid that has played with it weighs about 27 lbs, but nothing about the construction worries me. There are a lot of drain holes, which I like. The toy is not cheap, but just judging by the fun he had on the first evening, I'm sure we're going to get Granny's money's worth out of it. Suggestions for Step 2: Make an adult version.