I have a 5 year old son who has mild CP and has limited mobility on his right side. Would this be something he would enjoy? Or would the obstacles be a little to much for him?

If he can climb up a slide and go down, he should be good. It is worth trying it out at least once. I would try to go during non-peak hours at first. That way he can take time to learn the obstacles and not be rushed by a mob of children. It can get crazy when there are tons of kids there.

Most of the obstacles aren't too tough. My 2 year old does fine with them. You are also allowed up there with him to help if needed

There are several levels of activity, he can go to each level and find the one he and feel safe at and it will be great fun!

I don't feel that the obstacles will be too tough. My 2 year old daughter does fine with most of them. You are also allowed to enter any activity with your child to help if needed.