Dragon Con is the all that and a bag of chips. I haven't had the glorry of going yet dispite living in Atlanta, but I got to see the parade (yup its broadcast on local tv) this past year and that was the cutest thing you have ever seen.
I am judging for the Buffy Track vidders contest this year and most likely will volenteer to work with some other things around the con.
Having spoken to several persons who attend every year, if you can afford it, you should be there.
Plus Bonus, if you liked Diana Troy form ST: TNG, you will want to be there. She is a guest this year.