The Biergarten in Germany is lots of fun for all, and pretty good buffet too. Gotta love the Oompah band which will entertain young and old alike.
For the food, Akershus has some of the best prepared food in WDW, IMO, plus great service and decent prices. Akerhus and Boma (at AKL) are my picks for best value for money.
Marrakesh is fun, but IMO you get better Moroccan food at Jiko (AKL) or Spoodles (BW).
The Epcot World Showcase gives us a chance to sample things we are less likely to find at home. I know of no Norwegian or even Scandinavian restaurants in Greater Boston, and the so-called German restaurants in this area are just terrible. But we can get decent Mexican food, great Italian, Chinese and Japanese, and very good Fish & Chips around here, so nothing special for us there.