I'll be there. I been a volunteer at the tree sales for the last 5 or more years on Saturday mornings until about 12 noon. It is definitely a must-see if you have never been before. As many have mentioned, the fruit tasting is limited to 10 or so varieties, and when you are serving thousands of samples the quality is not going to be ideal. Still, you can find some good tasting varieties as well as others that you may never wish to sample again.

In another post someone mentioned that they only liked fresh fruit instead of cooked. I would suggest a visit to the festival before finalizing your opinion as there are usually many vendors who have incorporated mango into their products, usually including Chef Allen who is one of the better chefs when it comes to using tropical fruit. At least you can then say you've tried it and still prefer fresh fruit. Last year the Fruit Hunters team was filming Ken Love as he and Bill Pullman wandered about, so you could be "discovered"!
If you really want to sample a wide variety of mangoes, then go to Harry's!!!! But if Harry is out of town, then the festival at the Fruit & Spice Park is a good second place. At half the entrance fee compared to Fairchild, you can sample whatever fruit is available. Two years ago they had over 150 varieties to sample and they were cut up right in front of your eyes. Before you pack your bags to come to the Rare Fruit Conference at the Park, it is held every 3 years, so it will be in 2014. Hope you didn't buy your ticket already!