All day long, doctors and nurses will walk straight into a cubicle or room and this isn’t a usual experience outside of a hospital.  I always make sure that I knock and ask ‘is it OK if I come in?’ It’s a simple thing, but it shows respect to the child and their family.  I also make sure there is time allocated in the day that is just time for the child, where there will be no procedures or other things happening, so that they have their own time to be a family.