This weekend marked the 19th annual Boston Wine Expo at the Seaport World Trade Center.With close to 1,800 domestic and international wines to sample, the average connoisseur couldn't help but wonder what it might be like to be a part of the wine making process. And why shouldn't they? Vineyards are not only an excellent source of revenue, but additionally offer a self-sustainable product otherwise unavailable in other aspects of the business world. ...