I just went to Iceland with my DJI phantom 3 and have filmed a cinematic video that can be seen here:

If you get the opportunity to go to Iceland, I would recommend visiting the geyser and the large waterfall near it because they provide fantastic video/photo sites. I would also advise you to bring a car charger for your phantom batteries since the drives are usually long between locations. Unfortunately, I was not able to fly near the glacier because of a dead battery. Going there during the summer is particularly useful because the nights are very bright and allow videos to be shot later and earlier than they would normally be able to. Of course, in the winter it is the opposite so the lighting will most likely be insufficient.