Does the Z-Grill come with a grill grate or skewers?

The grill is built for skewers or a grate, but the material does not confirm that either is included. Check the box contents before you plan a first cook.

Can I use both wood and charcoal in it?

Yes. The Z-Grill is documented for wood or charcoal, so you can pick either fuel.

How many skewers can it hold?

The QuadFix system gives four positions for securing skewers. That means four placement slots, not necessarily four skewers at once.

How heavy is it, and can one person move it?

It weighs about 110 lb. That is a two-person lift for most people, and it is better treated as a stationary grill.

Does it have a lid for smoking?

No lid is described. It is an open grill for skewers or a grate, not a smoker.

Is it worth it over a lighter charcoal grill?

If you want thick steel, a built-in side table and skewer positions, its build is the draw. If you need portability or gas, a lighter grill fits better.