Hi Shawn,
Of course, there's no guarantees to what "perks" you get, but when we wore them we felt pretty special. I've also heard that sometimes, the resorts give you free upgrades also!
We didn't have our ears when we checked in, but after we wore them, eveyone noticed them! We got tons of attention, desserts, like I said, we got to have our own boat/car on some rides, we got to go to the front of the line and get the front row seats on other rides. Whenever we had a meal, we had great seats w/ awesome views.
And of course, you have the singing CM's that insist on everyone noticing and congratulating you on the trans bus or boat rides to the parks. The characters we great, they loved fooling around w/ my veil and DH's top hat. (We also wore them for our Cruise portion of the honeymoon and every night at our cabin, we received free Disney pins, we received a bottle of champagne and chocolate covered strawberries when we arrived to our cabin, and of course, tons of special desserts on the cruise)
It all varies and of course it's never guaranteed. I've read posts where people received ALOT more free/special stuff than we did. But the best thing is to wear them, you'll never know what "Magic" moment you'll find at WDW!!!
Which resort are you staying at again?
Congrats again!