I think your son will be just fine after your're there, he sounds like a good kid. You said he was shy, but that you thought he would go to the pool or arcade to play some games by his self.
I think he will end up going with you to the park, he may make it clear, he wished, he was esle where, but in side he may really enjoy it more than he will let on.
Teens are funny, who knows what they are thinking, or what they like or hate, I for one thing think they like to complain.
Its to bad you cant bring some one with him, have you tried to talk to any of his friends, as maybe some one can go with him.
Its best not to take his cousin if you feel it would be hard on you, to be around him. I for one. I have to first off, like someone a whole lot to be able to ask them, to be around me for a whole week.
your rent a kid was way to funny for me. LOL .
it would be a great ideal for parents, that have to bring kids to disney, that will not have a friend along. I would rent one..LOL
Great new business to think about.
When my kids were teens, I really thought their job was to make me miserable,.
Now that I look back on those years, I really think that they enjoyed complaining and looked for things to complain about.