We are going on the Sunrise Safari in July with my DS9. We have never been on it but from what I've read about it I think your son would really like it, esp. if he's really into animals.
However, there are only 5 2bd AKV concierge rooms which can be split into 5 1bd + 5 studio rooms. That means at the most there would only be 5 studios available per night so it may be very hard to even reserve a concierge room. The concierge staff would not be able to do anything for you until your concierge room is confirmed. If the member you rented from is able to upgrade you, you should contact the concierge IPO asap as I believe the sunrise safari is popular and fills quickly. Good luck! I think it's worth a try.