Manners still taught or not?

My husband and I have been going to the local OutBack Steak House on our anniversary for the past couple years. The service and the food are always excellent. The wait to get in, on the other hand,    
leaves a lot to be desired. We were told it would be thirty-five minutes or less. An hour later after watching others who came in after us get seated before us. Very frusterating!
However to pass the time I people watched, which is a favorite pass time of mine. I found myself wondering where the world of manners went. I watched people come through the door expecting immediate service; it was the body language which gave away the attitude. It is one thing to expect service when you enter a place of business, but it is a whole different thing when you know there are other people also waiting for the same service and feel you are more important than the others waiting.
The other thing as far as manners, what the hell is it with entering a building and not removing your hat. What is that? When you enter a building, manners require you to remove your hat; it is not an accessory to and outfit when it has a bill. I don't care if you are a boy or a girl, you remove your hat to show good manners and respect for others around you. Have manners gotten so forgotten that people think wearing a ball cap while in a restaurant is okay?
Come on, manners are not a style thing, they are manners and should still be just as important as teaching right and wrong. Schools do not allow hats to be worn while inside the building, and that is including country schools. People remove hats in church. Why would it be okay to keep your hat on in a restaurant where people are eating.
Are there exceptions to the manners regarding hats, yes. There is a time and a place for such things as hats to be worn, but while you are in a restaurant is not one of them in my opinion.What are your thoughts on this subject? Do you agree or disagree and why?
Please share your thoughts.