What is there to do at busch gardens europe besides the roller coasters?

Yes, there are shows, arcades, a couple of water rides, a variety of other rides, besides the roller coasters, a kiddie section, and food. For the food, since it is "europe", it will be themed food. I.E., German, French Canadian bbq, Italian, those are the 3 main themes (there is other food, too, so don't worry).