take proof of disability (we use dd1's statement) and get a hand stamp at customer sevices on the way in. this enables you to use the exits/disability entrances, and not queue (if your ds can't cope). absolutely brilliant, and has saved many a day for us.
is your ds ok gettig wet? a lot of the rides are water/have water sprayed or squirted etc. can be a nightmare for us with dd2, as she is averse. she had hysterics once on the train ride - the masks on the bridge squirt water. I got it full in the face, as did dd1. dh got the backsplash form us. dd2 got one drop of water on her, had hysterics, and has refused the ride ever since...
how tall is your ds? there is info on the website as to what height you need to be to go on various rides - use it to plan out which rides to go on.
oh, yeah. don't kno about food as we always take our own (allergies). but it doesn't look great.
take a picnic, and plan to watch on e of the shows while eating it (we head for the covered stage by duploland, where there are pantomime type performances, rahter than the main show - main show too crowded, not any shade, and too loud for the dds.
Thanks for the offer - we were sent a map with the tickets. Ds can't understand that we will be going there - he lives in the "now"!! I'know he will love it when we get there - thankfully he loves trips in the car.