Height
Xana,
at my last EK open day, they told us they no longer go by heigt, but arm reach. I believe the figure quoted was 212cm. So if you can reach 212cm with no shoes on by reaching your arm above your head, then you will be able to reach the safety equipment on board all of their aircraft types.
Just a tip, if you think you will JUST be able to reach this, stand a little closer to the wall when they get you to do this, as you will reach further than if you are standing away from the wall (obviously). If you search the CC forum for 'EK arm reach' it should give you the page on this thread where I posted the figure after the last open day.
Hope this helps, and good luck.
Sky