I have tried reheating one and don't think I will ever go that route again. As someone else noted, it really screwed up the glaze. I would really recommend just following their directions for serving. That is what we have done ever since and have been very happy with their products.
WSM, 99 & 09 Performers, 2-OTG, SJG mini WSM, Summit 420, Q100, Akorn, and Schwenkgrill