Took my son, who is 4 and a half and being tested for Autism, to the Garrison to watch Cars2. He sat for an hour before starting to become irritating. Then we left. I always go by my own cues when taking my son anywhere... Be impartial and ask yourself "Would I be annoyed by this?", and if you say "yes", then leave. Not everyone is aware of child's needs and cannot easily tell the difference between bad behaviour and a need. You have to learn to deal with it, as will your child.