Wow what a huge day. Obviously he had issues coping with a "change" in plans (at least in his eyes).

Often I find that M has more issues the more sensory situations she's been in. If I were to take her to Woollies, you can be guaranteed that we would have a meltdown later in the day due to things going not according to her plan. If I took her to an indoor play centre... we'd last around 20 minutes before her anxieties increased enough to have to carry her out. She doesn't cope during school holidays with any enclosed activities, so shops are out, the local hotel which has a playground is out, indoor playcentres are out... we just can't do it. At first I hated it, I felt punished, but now... now I'm relieved that I know what triggers her and can avoid it. Both of us are happier due to the decrease in meltdowns.