Until you get to the site you sit on either the upper or lower level and get a narrated "tour". They pointed out the houses of lots of rich and famous people, including Oprah, the late Richard Harris, Magic Johnson, etc. Once we got to the site they had the folks from one deck go down to where the glass bottom is and they talked about the different things that could be seen. Then they had those folks go back and let the others go down. The thing that most impressed me was that we took my mother who is in a wheelchair. DH had to carry her up the ramp into the boat but then they let us put her right inside a door at the front of the boat and propped the door open so she could look out and over the side since there was no way we could get her down to the lowest level. They were really friendly and open about helping us.