C.S.
A.,
IMO - I think that is too young to let them play in those play areas. Reason being, if they need help when they are at the top, it would be nearly impossible for you to go up there. My son is VERY active and climbs on everything and I didn't let him climb in there until he was about 2 1/2.
Also, I heard the Monkey Joe's has a special area for kids 3 and under. I haven't been there myself but I have heard it was nice for the kids.
C.