NellyO, I do it all the time. Doing it right now as a matter of fact. I have a 10.1 lb butt on the smoker. Will finish tomorrow and be served on Saturday at a party. Some meats are best served the next day. I like pulled pork the next day.
The real issue is how to reheat the meat. I've pretty much used anything that was available, from a microwave, oven, stove top, slow cooker, induction pad, it all works.
Have fun!