A:AnswerYes. This iPad supports the 1st Generation Apple Pencil. As long as the field you are having them sign a field that accepts a signature, the pencil (or a fingertip) will work.
Please note, the Apple Pencil Gen 2 will NOT work with this iPad.
A:AnswerUnderstand,& Yes you can use it for wifi if you choose too although you will still have a cellular number, it’s your choose if you choose to give it out. Just know that since you are paying for it. You might as well use it ;)
A:AnswerThere will be an option for trade in during check out from there you will enter in which iPad you are trading I. And if there is anything wrong with it. When your iPad is shipped so will a return label where you can send In Your trade in device.