Adam,
The problem here is not what the professionals tell you. It is what the amateurs who mark it think!
Years ago, as part of my professional qualification I had to do a project for the construction industry. I spent a couple of days with a loft conversion company, who showed me everything I needed to know.
When I submitted it the project was slaughtered by the guy who marked it (who had been lecturing on theory for the last thirty years. He was so out of touch because he had not been in the field for three decades!).
This forum is about people with experience, passing advice to others.
If you are doing a business studies course, then the chances are that the person marking it has never even had a paper round. Don't get too despondent if they mark you down.
The classic example of this is in the Rodney Dangerfield film "Back to School".
He plays a construction magnate who goes back to college to get closer to his son. He has to do a project on how to run a contracr job. He put "real world" factors in (paying bribes to the politicians, the Teamster's Union and the Mafia). He is promptly marked right down because his approach does not fit the theoretical model in the course books.
What you learn here, although proven to work in the real world, might not satisy your tutors.
Best of luck
Garry