I visited Japan in 2005 and visited Miyajima island. It was one of my favorite sites and we traveled most of the country.
In Sept 2008, my brother married in this shrine and the experience was AMAZING. Our side was American and hers was traditional Japanese. They were so inviting. Being a part of such a time honored tradition was something that not many "westerners" get to experience.
If any can make it to Miyajima island I would say go for it. It was was of the biggest highlights of my Japan experience!