We have 2 boys who are now 11 and 13. We've taken them into the city many times for day trips.
If you are interested in getting the NY pass for 1 day, here is an example of how to get the most out of it:
(csi exhibit isn't there anymore...it is harry potter and spy right now...this is the website:
http://www.discoverytsx.com/exhibitions/harry-potter
We did go to the Harry Potter one and it was nice. Keep in mind these exhibits are fairly small for the $$$. If you make it as part of the pass, it isn't so bad.
A link to our day with the pass:
http://www.tripadvisor.com/ShowTopi...rked_for_us_again-New_York_City_New_York.html
Here is another day with the pass....some things are the same but my older son didn't go with us on this trip
http://www.tripadvisor.com/ShowTopi...pass_day-New_York_City_New_York.html#34037600
My kids always like going to the intrepid museum, too.
Dylan's candy bar is within walking distance to the Roosevelt Island tram. Over priced candy, but the kids love it and it makes for bright colorful pics!
They always like going to Chinatown to eat, too. cheap!
skip the seaport...nothing much there.
sign up for groupon, living social, goldstar, etc... you never know!
Have fun!!!!