As I recall the dual membership used to give access to an evening in the MCC at a function with the coach. I think it was when The Reverend was at the helm. At some point after that they re-jigged the MCC/MFC thing & formed 2 categories
They also gave a free junior MFC membership which was useful. There are a couple of Demon relatives of mine in their late teens, early 20's who were introduced to the MFC with one of these free memberships I'd imagine there are plenty more so that was a worthwhile promotion
When things were really crook and our attendances sucked I used to enter via the MCC, get a passout, then enter with my MFC membership to increase the crowd stats by one.
At the end of the day it's not about what you get - it is a donation. Rather than pins and scarves etc I'd rather the club just keep and use the money. How many scarves can you wear ?