Don't worry, I'm sure you will enjoy it. I have never stayed at CSR but I have visited and it is beautiful. As from going from the Poly to another resort you will be fine! Our first trip with my boys was to the Poly and we LOVED it. My next trip was to POP and I had a blast. Since then we have been to OKW and back to POP. POFQ is just 41 days away I haven't had a bad experience at any of them yet. They all offer their own special feel. I lOVE the Poly but I can't justify $300+ a night, especially when we go to WDW so often anymore!

As for you son, my son is also in the spectrum (he is diagnosed as PDD-NOS.) What is it specifically that you are trying to avoid with him? We no longer use a stroller with him except sometimes at Epcot and then we jsut rent one of those double ones. My son is a great kid ususally but he just lights up when we go to WDW!

Have a great trip! I can't wait to hear about it when you get back