As the title says please! Could some kind soul please take the time to explain it all , as I thought this trip my children may like to get involved.
Who/ where can you trade pins?
Can you trade any pin?
My children are 10 and 7- are these good ages to get involved?
Any tips info to get the best enjoyment from pin trading please
Thanks
Pin trading is fun yet sometimes irritating when your kids stop you every two seconds to do it

. But with that said, here is the low down. Anyone of any age can trade pins. Almost every WDW employee wears pins on lanyards from the hotel staff to in all the parks. Some wear the pins on a little belt pad and some resorts will have boards of pins at times (like at Art of Animation) where you can go peruse pins to trade.
Essentially, you or your kids will just have to approach an employee and look at their pins (my girls are eagle eyes so they'll spot one from far away and lure me to go look). Then, if you want to trade, you just hand them the pin that you want to give up and tell them which one you want of theirs. They will gladly give it to you.
You can purchase starter kits with multiple pins and lanyards and individual pins at Disney World (in almost any store at resorts and parks) You can also find them on E-bay but I have heard that these might not be "real" Disney trading pins despite looking like them in every aspect. Whatever the case, as long as it is a Disney pin (or seemingly so), any pin can be traded.
I will tell you that it is fun for the kids. It also helps to teach good manners and being independent if you make them do the asking and also thank the employee kindly whether they end up trading or not!
It can delay things a bit so you might have to set parameters or else you could spend your time looking at pins.
Some hints for you though--I bought a bunch off E-bay so that my kids have a variety. This way they can start trading without lamenting about giving up ones they like. If they really love a pin, I would actually take it off the lanyard and keep it somewhere safe as they pins sometimes fall off due to not placing them on well or being pulled off. On that same vein, buy a pack of extra backs with you and keep them on you in the parks so you can have a spare if a pin spontaneously pops off and you' can't find the back. And for you, realize that they may want to trade a very expensive pin for one that you know is from a multipack that isnt close to the value. I have done my best to convince them to not do the trade and many times, have gotten them to put those gems away so they aren't in the trading game. However, sometimes kids just want what they want and since selling these isn't really the end result (it's more for the fun), just let them have fun and try to look away when you realize that they are trading down.
Also, check out E-bay for some very great Disney lanyards. My girls have loved some of the ones we have bought on there since the original ones that came with the starter packs were just blue. Anyways, hope this helps.