I always say it's great. I will never complain at a restaurant. Ever. I say it's wonderful, and to boot, I never lie. Because I didn't have to lift a finger to stuff my face hole. Whether the meal was pleasurable to ingest does not matter enough to discuss with whoever is bringing it to me. If they really care, they wouldn't come asking me AS I HAVE A MOUTHFUL OF FOOD!! I swear, I think they wait until you get a mouthful and then come running out of nowhere to ask "Is everything ok?" ... "Mmmmmhmmm" *thumbs up*
Anyway...
1. They don't REALLY care if you like it or not. Maybe at a mom & pop joint, but long-winded critiques at chain restaurants of their mass produced food only does two things: It wastes your breath and their time.
2. They aren't going to change their recipe because you didn't like it. For every person who doesn't like it, 500 do. Hot food in particular. People don't want their faces melted off at a restaurant.
If you want a guaranteed good meal, cook it yourself. And have me over to tell you how good it is.