Definitely Biergarten, especially since you have other character meals planned.
Yes, SplashMountainMama, it is all German, but I don't think you have to be at all "adventurous" to appreciate it. Lots of meats, potatoes and noodles, that I can remember. A great assortment of "cold cut" type meats with yummy, mild cheeses and great breads...and one of the best chicken noodle soups ever. 6 members of my family over 3 generations unanimously enjoyed the food and atmosphere, including a few very non-adventurous types. Plus you will find more choices at a buffet for picky eaters, rather than the pre-plated arrangement at GG.