I have ordered two different times from Wonder (one for pick up and one for delivery through the Wonder app); didn't have the chance to stop by and eat there yet. Based on my experience; pick up notifications on preparation of food and readiness of order are spot on; while delivery had a bit of hiccups given by delays.
With that said, as Celiac i am always in a bit of a struggle when it comes to order takeout. Wanted to give them a chance and the quality/taste of their GF food options is *mind blowing*. Cherry on top, having multiple restaurants to chose from in one spot is extremely convenient.