Should there be a dress code in places such as school, restaurants, places of business, etc.?

I personally believe that, while America stands as a beacon of individuality, there needs to be dress codes in certain establishments.  If you were to go into a fancy restaurant with your date and there was a guy who had never taken a shower and had patchy clothes next to you, it would make the meal quite unpleasant.  Sometimes, it is just assumed that you conform to the dress code.  I mean, who in their right minds would wear a burnt orange shirt in the student section of an Texas A&M game?

In order to pursue this idea, you must first fight the counter arguments.  Yes, I understand that as Americans we are encouraged to express our own ideals.  I have no beef with people who print controversial topics on their shirts and walk around the streets.  While your lifestyle is your own, business owners my not agree with it.  If you think about it, business owners should have near limitless control over their own stores.  Would you like it if I walked into your house dressed in drag?  People should be able to wear what they want to wear, but also respect owners of establishments and match their clothing appropriately