Rude?

Then many people have been rude to me and I did not even realize it!
Someone asking to make a Guest to Guest trade is not rude at all. I suppose if they approached the person rudely and/or said YOU HAD to trade with them.
I don't wear a lanyard much in the parks any more. Just got out of habit when it was so hot and sticky out. And I guess I have not got back in the groove of wearing it again.
When I did, quite often some of the pins were ones I had just traded for. So chances were slim I would want to trade it right away, if at all. If a CM or guest inquires about trading that particular pin, I just reply I just received it in a trade and would like to keep it.
There are times I wear pins in the parks that I do not want to trade. I wear those on my clothing, like a lapel or directly on my blouse. (Or camera strap or pin bag strap)
If you see a pin trader wearing pins like that, chances are they are not their traders.
And people wear what are referred to as Peacock lanyards. As you may guess those are full of pins they are proud of and like to wear for various reasons. Again, if you do this and someone inquires on trading, just nicely explain you are just wearing it, but it is not for trade.
Then there are the people who ANY pin they wear is up for a trade, for the right pin in return.
If you plan on wearing or displaying favorite non-trading pins in the park, you may want to invest in the locking pin backs so they will not be lost.
If I wear a lanyard and go on rides, I just tuck my lanyard inside my clothes. But I check my pin backs occasionally to make sure they don't come loose.
Resort pins changing can happen often or rarely. I have not noticed any rule of thumb. Around some holidays the resorts will have their own specialty pins.