I forgot, I also booked two rooms on points last summer for a stay in the UK. It was two separate reservations, both in my name. One room for us and one for our daughter. I had submitted a SNA request for a junior suite for one of the rooms. I emailed the hotel informing them it was more important for the rooms to be close to each other than getting the upgrade. Hotel responded very promptly, was happy to assign rooms close to each other and even proactively upgraded one of the rooms to a junior suite allowing me to save my SNA's for another trip. When we arrived, the rooms were literally right across from each other in the hallway. TL;DR it worked fine in Europe too (at least for the Courtyard Exeter). YMMV...

--Jon