The wait time usually is reasonable unless there are too many offers on and understaffed. Food can be good but sometimes, albeit less often it is very poor.
Big complaint , which I found after the event was that the points, despite giving my reward card in were often missing when I checked my account. I lost a lot of points before I started checking up. Now I do it religiously and generally it has improved. However, it has happened a few times especially when the meals were below par or returned and an alternative ordered.
The system for dealing with dealing with complaints for the points is awful and despite promises from staff nothing was resolved. So back to chasing things again going round in circles. SImply do it right first time and stop referring everyone to FAQ section, after which you have to wait 8 working days for an answer again.