Only for american people, ten points?

hi everybody, i'm an italian guy, i'm 20 and i'd like to come in usa next year.. one of my dream is to visit the cemetary in martha's vineyard island, cause i know that there rest my idol John Belushi. So my question is: is martha's vineyard island (and the cemetary too) accesible to everyone? i really want to visit his lapid.. he is my god until i was a child.. all information about that are useful! thanks everyone!