KettlePizza Deluxe Charcoal Pizza Oven Kit for 26.75 Inch Weber Kettle Grill

Does this have a tight seal on the Weber grill? I won't see smoke escaping on the sides? This includes the actual kettle grill with expandable piece?

How tall is the pizza oven?

Will a rotisserie work with this?

Is there a door for the opening? How do you regulate the heat so you don’t wreck the enamel on the grill?