OT - Chef Mickey's will give him a Mickey cup cake. With that and the choices on the dessert buffet we thought cake would be overkill. For us it would have been. My nephew loved his cup cake, was over stimulated by all the activity there and was delighted to just lick the icing off his cup cake. We celebrated his 6th birthday there too.
Hopefully you can find a Buzz cake and the right time to surprise him with it!