I only do these kind of quintessential New York outings when family or friends are visiting. But, I LOVE doing them as it always reinvigorates my love for the city!
The Statue of Liberty and Liberty Island re-opened on July 4th, 2013! Ellis Island still requires more repairs and will be closed until further notice. You can only reserve your tickets online and I remember there are lots of restrictions for what you can bring and who can climb to the crown (I believe children have to be 4 feet or taller). More info HERE.