Glad you having a good time! We've been to both Graceland and the Civil Rights Museum. We didn't see Jacqueline Smith protesting - very interesting story. You have to admire that type of dedication but the museum is very good and doesn't seem to be exploiting anything. I recommend that everyone visit it if they're in the area.
If you haven't been to Vegas since you were 16 you and your son should check out some of the over-the-top architecture of the strip casinos. He'll probably enjoy The Fremont Street Experience too. Have fun!