The closest I've ever come to attending this was the 8-28-82 GD show on the fairgrounds, that being the 10-year anniversary of the show later released as Sunshine Daydream. Since there's little chance of another Dead show there, I keep hoping to be able to go to the actual Fair some year, but this is not the year.
It is without a doubt the most beautiful venue I was ever in. The word "magical" is seriously overused, but it's aptly applied to that place.
If anyone's been, tell us about it!