After several years of doing Disney, we will be going to Universal for the first time in early October. We have a 9 year old boy.We are staying on-site (portofino). Any don't miss things for the 9 year old? We arrive Friday night and based upon hours, I was thinking US on Saturday and IOA on Sunday. Does this seem like a good gameplan to the veteran Universal Studio goers? Does Mythos stay open for dinner after the park closes? IOA closes at 5:30 on Sunday and I thought that would be a good time to hit Mythos.