I agree that the best way to do this is to vacuum seal portions that you can reheat with hot water later. I do this every year for our Cub Scout Pack at our annual camping trip. It'll be just like it came off the smoker and was just pulled.
If you don't have a vacuum sealer, I'd put the PP in a pan and SLOWLY reheat it. I'd put some apple juice in with the meat to keep it hydrated during reheating. Stir it often to prevent the bottom getting too hot.
18.5", 22.5" OTS
Large BGE (chambersuac's)
The Fiery Furnace (chambersuac's)
Big JT's Smokin' BBQ Competition Team