I have been cooking pork butts and briskets on my Kamado for many years and regularly cook for a range of events. I always do a full load, which is 5x pork butts at 9-10lb each and 3x briskets at around 13-17lbs each. This quantity of meat can present some cooling and storage challenges. Pork butts come off the grill at 180-182F internal, briskets at 192-195F by Thermapen.
After they come off the grill, I wrap them in 18" wide commercial plastic wrap (AEP SEALWRAP) which i get at Restaurant Depot. The guy who taught me this had a great line, "Use the wrap like someone else is paying for it.". 4-5 lengths maybe 4 feet long each. Wrap each layer snug to eliminate any air. You end up with maybe 8-15 layers of wrap around the pork butt, which seems excessive, but will be needed upon reheat. After the plastic wrap, wrap in a 4-5 foot length of HD Foil (18"). Since the juice has nowhere to go, it remains in and around the meat.
Now for the cooling. When you have almost 50 pounds of meat at 180F, the proper tool is a blast chiller. Since I don't have the $10K for one, I came up with this procedure . First, you need to bring the temp down to around 140F or so slowly. I usually put the meat into the oven (off and cold) on aluminum half sheet pans. The aluminum helps to conduct the heat out of the meat into the oven. I periodically open the oven to let the accumulating heat out. This continues for 4-6 hours. The heat was pushed into the meat slowly, so the cooling process is the same. Use a Thermometer place in between two butts to determine the temperature. When the meat is around 140F external, you have 4 hours to bring it down to below 40F. A regular fridge cannot do this because of insufficient heat transport and heat removal capability (2 years of thermodynamics talking). To remove heat fast, you need high velocity air flow. I put the meat on the half sheet pans in front of a high velocity fan (type for drying carpets). This works best outdoors in low temps (Fall or Winter), but will also work in A/C space indoors. I use a thick aluminum plates as spacers/heat sinks. I periodically rotate and flip the meat to even out the cooling. make sure air is moving under the pans as well as over the meat. In about 2 hours, the external temp will be down almost to ambient. I generally split the meat across two fridges, using both the freezer and fridge compartments. I put one brisket in each freezer and the remainder of the meat split between the fridges, still on the aluminum half pans (as heat sinks/radiators).
To reheat, thaw in fridge for 2 days. Still wrapped in plastic and foil, reheat at 210-220F actual (convection if you have it) for 6-7 hours on half sheet pans. You have to reheat at a low temp because you are pushing the heat through all the layers of plastic. It is good to about 250F, but since ovens cycle, you need some elbow room with the temp to prevent it from melting.
Since the reheat cycle will do some additional cooking, this is the reason I remove the butts from the grill at 180F. I have held this meat in a 5 day cooler with 350F heated firebricks in the bottom, well-wrapped with beach towels for up to 24 hours. The bark loses its texture in this process, but this is a small price to pay for the flexibility of the process.
I am not a professional cook, but I have found this works for me. -Doug