One of the great benefits of hiring a errand company is that we take a few of your errands off of your plate.
Having less to do may help you be on time 
or 
you may have some of the issues below.
I am speaking from experience here so I hope these help you nail down your lateness and then maybe fix it.

Last year I attended a beautiful wedding of one of my husbands photography clients.
She was hosting the wedding and the reception in the same location.
It was actually in the same large room.
After the ceremony was over guest were sitting in the room as the wedding party went with my husband to take pictures.
You could see the stress on the brides face.

Have you ever been to a perfectly lovely event where everything is going great.
The venue is awesome.
The decor pops.
It is just the right amount of people.
​But then.....