Love to help you with this one as I've catering experience and chef experience. In 1999 a friend I did the monthly church potlucks with asked me to help him do his daughter's wedding. This was a vegetarian church, but we had a lot of juice with the pastor. His daughter, 45 at the time, was to wed an Irishman not of our faith and they wanted to do their wedding on St. Patrick's Day (his name is Patrick) and they wanted a traditional corned beef dinner.
So we got 40 pounds of corned beef briskets from a very good German place in Mountain View. Using really large aluminum roasting pans we layered down quartered cabbages, bias cut carrots, turnips, celery and red potatoes in the bottom of the pot. Laid in sprigs of fresh rosemary and thyme from his yard and then vegetable stock and white wine. Then laid in the briskets on top of these huge "rafts" of vegetables. The briskets we criss cross cut the fat cap and smothered with spicy mustard and the pickling spice which we bought in bulk. The roasting pans were covered in foil and roasted at 400 degrees until the briskets had an internal temp of 170 (this was to satisfy his wife's resistance to eating meat). The smell of those roasted vegetables, the herbs, stock and wine and the briskets was heavenly.
My friend got to be in his daughter's wedding while I did the work. All my friend's brothers and nephews are in the restaurant business and they also brought their own specialties. I did salads, desserts and the corned beef. I also hand carved 40 lbs of corned beef that day. It turned out really good. It was an amazing feast. The corned beef rested about an hour before carving and was fall apart tender.
Let me also share my baking bag corned beef dinner recipe with you which I just posted a few minutes ago. For home use this is really easy. In Fact, make your daughter do it. It'll take her 10 minutes to put it together and she'll feel so pround, it's really foolproof.
http://forum.cookshack.com/eve...1028883/m/6232946427