I have to agree with Norm on something and disagree with you on another.
"Staying on the correct side of a yellow line is not a guideline, it is the LAW. It is illegal to drive on the wrong side of the road. "
The yellow line IS a guideline. It IS to stop people from driving on the wrong side of the road. I don't think it is a law per say, but ignoring it would be a violation of the rules of the road, and you would recieve a citation. WITHOUT this line and asking people to take it upon themselves to do the right thing and adhere to the rules of the road...just wouldn't work. There would always be someone trying to buck the system and move over to the other side more and more until driving would be an obstacle course. Hence we paint lines on the road to guide people to follow them.
"social etiquette dictates the use of terms such as "suggest" and "guideline" rather than "require" and "standard" -- but social etiquette also dictates that such softer terms carry the same expectation of conformance on the part of participants in the associated function or event."
This is true
While wearing jeans is not a violation of LAW, you are venturing OUTSIDE of the suggested guidelines.
As the lines down a road remind us to follow the rules of the road, a suggested dress code does the same. Crossing those lines in either case is going against the flow of traffic.
No one says you are required to wear a heavy winter coat outside when it is 10 below...however you would look pretty silly shovelling snow in a thong. Its not illegal.....just not the accepted
way of doing things.
Just my 2 cents