The walk to Giant's Causeway was absolutely breathtaking despite the weather not cooperating. The weather wasn't the best and it was one of the coldest days during our trip. Some people would describe it as miserable, cold and rainy, but it added to the grandeur of the scenery. Surprisingly, you can trek all over the basalt columns. There were some guards looking about, but people could climb as high as they wanted. Since we weren't really wearing hiking shoes, we decided to stay in the safer and less slippery areas. Didn't want to trip and fall into the tumultuous ocean.
Despite the weather being terrible and the holiday season, there were still a lot of tourists. I didn't love the amount of people, but Game of Thrones is filmed in the Belfast, so there were a lot of tours geared towards lovers of the series. I love the show as well, but we went for a tour specifically focusing on the Causeway, which I think is the smart way to go. So if you ever make it there, skip the Game of Thrones tours and focus on the good stuff!