Yes, things do go wrong sometimes and we obviously can't answer for the judges(!) but as for late results and rosettes etc that is purely down to the fact that there are never enough volunteers on the day to help and probably a small number of people on the day are trying to do too many tasks and getting very stressed.
Last year we noticed we had a problem with some of the more inexperienced stewards not bringing the results slips to the table regularly which in turn had the knock on effect of delaying results going up on the boards - so this year we have allocated someone (well....me!) to go around and collect the slips on a regular basis to ensure there is no backlog.
We do try to take peoples comments and suggestions on board to improve things for exhibitors and are always open to new ideas.
