Nah... they are waiting to do the next shot.... meanwhile, a boy is being filmed being shocked by a boars head snarling at him... might take 2 hours to get the lighting and the angle just right. So, there they are.... waiting for two hours... cannot go anywhere. Remember... these are actors... they might have no interest in themeparks or HP. It is just a job.
More evidence... those two girls are hyper groomed and dressed. The key grip was angry just because you caught him trying to be the key grip.