Yes, WorldCon is going to be a hoot. It'll be at the Hynes Convention Center in Boston.
Note though, that it ain't cheap. At this point a full membership costs a whopping $200. Daily passes run $50 for Thursday and Monday, $75 for Friday, and $80 for Saturday and Sunday.
However, this is WorldCon. The World Science Fiction Convention. Pretty undeniably the largest of it's kind. If you like reading Science Fiction, it's the con to go to. Program participants include (but are hardly limited to):
Brian Aldiss, Gregory Benford, Lois McMaster Bujold, Jack Chalker, John Clute, Gardner Dozois, Esther Friesner, Neil Gaiman, Craig Shaw Gardner, David Gerrold, Joe Haldeman, Harry Harrison, Katherine Kurtz, Ellen Kushner, George RR Martin, Terry Pratchett, Mike Resnick, Michael Swanwick, and Walter Jon Williams.
WorldCon - be there, or be square.