I have nothing to do with this site, but it looks like a good place to look.
At that age I remember having a great time at summer computer camp in Vermont (2 weeks sleep away) in the early/mid 80's. I had the best time doing the non-computer things (like sailing on Lake Champlain), but I always did as many computer related activities/classes as I could. We got to use the newest Commodore CBM with Pascal! As an advanced class I also learned Fortran on the big IBM (System/34 I think). I don't use the old programming languages any more, but I'm still happy to take out a sail boat!
If you're going to visit the USA I think you should focus on non-computer activities. Like visiting the great national parks, such as the Grand Canyon, Yellowstone, and a hundred others that are unique to America. Spend time programming nearer to home. You can always play with a computer in a windowless closet anywhere!