I have an opinion--as someone who's attended the F&W Fest for ten straight years, they're not what they used to be.
"Back in the day" (as recently as four years ago) you'd get the winemaker or the winery owner presenting anywhere from 3-5 wines and you'd get a pretty decent wine education for free, as they would tell you a lot about how they made the wine and why it came out the way it did in the 30 minute time period. This was amazing, considering it was free.
Unfortunately, a few years ago, some very rude behavior started up--certain people would be seated for the seminar, toss back all 3-5 samples, then get up and get in line for the next seminar, where they would proceed to do the same thing again. Enough of these rude people existed that they would fill enough of the seminar capacity that it was difficult to get in to a seminar without standing in line for 45 minutes.
In order to manage that problem, WDW started to charge for the seminars, and they increased them to 45 minutes in length and standardized them at 3 wine samples. The discounted price for DVC/AP/TiW members was $5. It was a reasonable price for what you were getting, although the presenters started to change--instead of someone closely associated with making the wine, much of the time the presenter would be a marketing person, often from the conglomerate that owns the winery, and they show you a powerpoint presentation about the winery, and the terrior, and often the bed-and-breakfast that is run at the vineyard. Then, in the last 15 minutes, they rush through tasting the wines, telling you what they can about them (which is often not that much). Still, for 5 bucks, it seemed a good value. Last year, however, they raised the discounted price to $8. A small difference, but a dealbreaker for me. I won't be attending any wine seminars this year, I booked only culinary demonstrations which (IMO) continue to be a good value, especially if they continue the practice they started last year of bringing a wine presenter into the culinary demo, turning it into a food & wine pairing, complete with explanations of why the wine and the food go well together).
Sorry to be such a Debbie Downer--I'm sure I would have a better opinion of the wine seminars if I had no idea what they used to be like!