We enjoyed it in November 2009. No, the food wasn't the best of our trip, but it was good. We all found plenty to eat because there are a lot of choices. The reason we're going back there, though, rather than the Wave (excellent food, but the atmosphere was more run of the mill) is the fact that the atmosphere at Biergarten was SO much fun. It was both DH's and my choice for a return trip. The kids had a blast dancing to the music. We got to sit right by the dance floor. We heard the set THREE times, we enjoyed ourselves so much (it started when we came in, then we heard it while eating, then, when we were about to leave they came in again and the kids had to dance some more! You do sit with strangers, it didn't bother us. We just enjoyed our beer and some yummy food (my favorite was the pretzel bread with potato leek soup).
For us, it was the day Disney clicked for our family. It was a cool, drizzly day at Epcot. The kids were lukewarm on rides, but wow, Biergarten was such a blast and after that the Disney bug bit my DH.