I can help with Chef Mickey's,Ohanas and Wispering Canyon. Chef Mickey has the basic characters and it's kind of like a party atmosphere. Ohanas and Wispering Canyon are active fun places. Coconut races (Ohana) and Hobby Horse Races (Wispering Canyon) make the places a bit loud but lots of fun! Hawiian music and hula hoopin at Ohana and Wispering Canyon has just plane hokey silliness!
All 3 are lots of fun and are always a must for our family trips. The rambuncious boys in the group (6,9,9,and 12) really loved Wispering Canyon.
So I think it also depends on what of boy your son is!