In your consideration of my answers, also take into consideration that 210.52(A)(2(1) says in part "unbroken along the floor line by doorways and similar openings, fireplaces, and fixed cabinets". Open-type railings, even when considered a room divider, are broken along the floor line.
Yes, but that's because measurement is made from each side of the break. Have to make certain the receptacles to either side are not more than 6' from that break.