You may be thinking, "Wow, these people are strange recommending Costco." But this is the WORLD'S LARGEST COSTCO, and boy is it huge. I'd say pack a lunch, but you don't need to with $1.59 hotdogs and soft drinks. Seriously, this place is awe inspiring and definitely worth a (day) trip.
Whether you like beer or not, Oktoberfest is always a good time and is also great for kids. Activity passes are available that give you unlimited access to the tram, alpine slide, mountain coaster, ropes course and more. The weather is usually great, and there is always good food.