If you're looking for something casual, outdoors, and a good variety of food then the Food Truck Park in Wānaka is the place to go. There's a handful of different food trucks to pick from so it's perfect if you're with some friends and all craving different food.
There's a nice outdoor seating area with picnic tables where you can enjoy your burrito, pad thai, or whatever yummy meal you decide to go with! Enjoy a nice lunch or dinners outdoors in a grassy area.