First, let me say that Iceland does have financial problems, but in no way do these problems affect tourists. If anything, it is a benefit for the tourist, as your home currency converts into more ISK now. Second, there is absolutely no need to have ISK in hand before you arrive in Iceland.
Step 3) Knee length. For the knee high compression stocking, measure from the back of the bend of knee to the floor behind your heel. Do not wear shoes as you will get an inaccurate measurement. LegSmart Pro Tip: When measuring the back of the knee, make sure that you are measuring below the bend of the knee.
It would be most unusual for compression stockings to cause nerve damage unless they are extremely tight (>30 or more likely>40 mmHg pressure). The major nerves are deep in the leg and the sensory nerves are more superficial. I guess it is possible that a small branch of a superficial sensory nerve was irritated. This should resolve with time.