Sorry this happened to you. If this ever happens to you again, don't hesitate to reach out for a CM pronto. They are willing to help, especially if the incident just happened and they can see what the problem is. We've had this happen before at fireworks and other shows. CMs have been very helpful with approaching the parent in question and asking them to remove the child from their shoulders or to move to the side where they won't block other's view of the show. Most parents aren't aware how much putting their child on their shoulders affects other guests -- this is why we recommend here that parents don't do that, but put the child on their hip instead. If the child's head is pretty much level with the parent's, the child will be able to see fine and not block anyone else's view.