What does your son want to do? Does he WANT to go to Disney and see the characters? Mine were never "into" it like so many. They do love amusement parks of all kinds though. My daughter's 2nd grade class went there on an overnight field trip a few years ago, and that was the first interest my daughter had in going. We had a great time (Mommy and Daughter time with the class... Dad and brother had work and school, lol). Only after she came back saying how much fun it was, did our son (3 yrs older) express any interest.
We went last spring as a family. They had a blast, but haven't really asked to go back. They are more excited to go on their Confirmation camp trip this summer with their church group--to the mountains in NC. It'll be our son's 3rd trip (and last before he ages out) and he looks forward to it all year.
Our kids' personalities are much like ours (me and husband) and neither of us was ever big huge Disney fans either. We both grew up within a few hours drive (4 at the most). We prefer mountain trips (hiking, water falls, white water rafting, etc). And our kids love it too.
So I ask you: What does your son enjoy? Go with that. You won't be disappointed.