Sometimes, folks just like to burn it empty a few chunks of wood at max temp setting,to see how everything works..It takes a few fatty cooks,to get it started on breakin' in.
An empty run lets you check your wall outlet,power supply,if the element is getting you smoke.
See if your drip pan fits underneath and if the smoke is goin' in the bride's bathroom window.
I'm a little reluctant to try to do my temp mappin' on an empty,clean stainless cooker.
There isn't that great a rush,and I find they are more consistent when at least half full ,and have had several cooks to start coating the stainless walls.
If the cooker looks pretty clean,pork butts are mighty forgivin',and usually edible-no matter what.
Some folks like to make up a few pounds of fatty hamburgers,as another approach.
Think how many of us have cooked on the crud covered grates at some picnic ground.
Nobody that died has posted,yet.