DH and I stayed at the Polynesian in July and we were celebrating our anniversary. I mentioned this in conversation to a CM out front at the valet desk and she immediately handed us 2 "Anniversary" pins. Then when we got to our room there were 2 Anniversary pins there. I'm sure they'll also have the Honeymoon pins as well.
If they don't automatically give them to you, I'd definitely ask at check-in.
We wore our pins during our trip and were surprised a couple of times with a special dessert. We also got a lot of "Happy Anniversary!" greetings from the CMs throughout the resort and the parks.
I do agree that if you want special things to happen, your best bet is to plan them yourself so you won't be disappointed. Wearing the pins is no guarantee that anything will happen, but it's a great surprise when it does.
P.S. When you make your restaurant ADRs, also mention it that time so it can be noted! Maybe something special will happen during some of the meals.
Congrats on your upcoming wedding and honeymoon!!!!
Here is a picture of one of the complimentary Anniversary desserts, from Kona Cafe: