Question: Tours of the brewery itself are not offered, but the Guinness Visitor Centre, in a four-story converted 19th-century building, presents a wonderful history of the world of Guinness.
The brewery may be off limits to visitors but the Visitor Center situated nearby offers tourists a fascinating glimpse at Guinness' past and how its business operates.

Answer: it is not possible to tell

Question: You can request it after filing your complaint, but, as with anything filed with a court, nothing can be done about your request until the other party responds.
After filing you complaint, you can request it and hope that the other party responds.

Answer: yes

Question: Look for the Galerie des Rois across the top of the three doorways.
The Galerie des Rois spans a single doorway.

Answer:
no