Before I went to Sweden, I was told that there would be Global friend students which can pick up your key and bring you to your student room. I arrived in the evening when the UAC center is closed and unfortunately I didn't hear anything of a global friend student, not even that there won't be one. Luckily, a friend who was already in Sweden that day could pick up my key. I would advice to tell the students whether there will be some help or not. When not, it's useful to recommend the students explicitly to arrive during working days when the office is open!
The introduction days were arranged well, but some of the lectures were'nt useful (like accomodation). It was good to become a bit more familiar with KI in this way.