Rule Number 1 for a parent with a Kid with Special Needs who has behavioral issues or a kid on the Autism Spectrum: You must do what you say.
Now this is probably the hardest rule to follow with kids, for there will be many times that the second you say something you know it was a mistake. My little one at the moment is very good at getting what she wants by still staying in the parameters of what I said. Basically I need to be more specific so she can not bend the situation to her favor.
This rule will take you years to figure out and follow and your husband maybe even more

, but it is one of the most critical skills to learn when raising a child with these type of issues. I bring this rule up becuase if you have told your child about the trip, you do not want to cancel it at this point. That can cause more problems than it is worth.
Rule Number 2 for a parent who has a kid with a disability: You will never be 100% ready to do something new.
No matter how much you try to prepare yourself and your child for an un-known situation, there is always more that you can prepare for. Yes at the moment you may feel overwhelmed just trying to figure out your child given all the new information, but you will be doing that for years and years and years (okay the rest of his life

). I can not tell you if you are ready for a trip to Disney or not, but I can tell you that if you (for example) wait a year, there will only be other issues causing you to wonder if you are ready to take him to Disney.
I personally set a skill as my criteria. I wanted my little princess

to have make believe (or pretend) skills. At 7 years old she really has only just gotten this skill. For example: she is currently watching Little Einsteins and is interacting with the show, but six months ago she would just sit there and watch the show with no interaction. Playing with Little People she will now have them talk and play with them by herself for up to 15 minutes, but 9 months ago she would explore the toys but needed an adult to do the pretending and getting the characters to talk. She has been taking her stuffed animal Mickey Mouse or Pluto with us when we go to the store and strapping them into the seat next to her in the car. She has finally developed an immagination. Before this she would have been facinated by Disney, but not really gotten into the magic of meeting a Princess or had fun goofing around with Goofy. Those were my criteria to determine if she was ready for a Once In A Lifetime chance to go to Disney World. Do I feel like I am ready to take her and deal with her behavioral issues while there, NO.

But I am as prepared as I probably ever will be. My day is planned with morning in the parks and afternoons with breaks (naps) and time at the resort. I hope to follow my bedtime routines getting her to bed at the same time. I will miss all the fireworks and nighttime parades (except the one I can see out the window of my Contemporary Resort room), but if I can keep her from as few temper tantrums as possible the trip will be even better.
You will have to decide what makes you ready to go to Disney with your son. At least at one point when you booked the trip you thought you and him were ready to go. Don't let the disability rule your life. Over the years you will learn how to continue with life and just adjust HOW you interact with the world. I know I can not do the parks comando style, while many parents of 7 year olds can. A stroller will be a necessity for us, instead of a convienence like it is for some parents of 7 year olds. We are having many Character meals to meet the characters, instead of standing in line, since she will not do good waiting long periods of time in a crowded line just to meet a character. We are still interacting with Disney, but just adjusting how we interact.
I wish you luck with your decision and learning to view your son from a different perspective. The cycle of grief will come and go over the years, but things will look better. Just remember your son is a little boy, who just happens to have a disability. Places like Disney World are good for reminding us that our little ones are little kids like all the other little kids, not their diagnosis.

My little one wanted to come up on my lap in the middle of the post while watching Little Einsteins. I told her she would have to wait since I was typing. She wanted to know what I was typing. I told her I was typing to someone to give them advise for their little boy. - - Her reply - - Tell them I said hi - - then she went to sit on her beanbag chair.
