Well I can tell you what my DH & I like to do on our couples only trips..
1) at night take the boat from DHS to the Boardwalk, Beach Club & then onto EPCOT & then back again....We love the looks of the resort & two parks at night.
--WHile you are doing this, stop at Boardwalk & get off & enjoy the entertainment on the Boardwalk & maybe have an adult beverage up in the bar in the Boardwalk or Big River Grille
2) Take a boat from any of the MK resorts & make that round trip. this is fun during the day... We did it on our last day last visit, as it was relaxing & we still did "something" on our last day.
3) Drink around the World -any version of this you want based on your alcohol tolerance. Even if you don't drink alcohol, each country has some sort of non alcoholic version of drink too.
4) If either one is a golfer, try one of the Disney golf courses. If neither is a golfer, go miniature golfing at one of the two courses in WDW. IT IS fun after a dinner out to get some activity after a filling dinner. (Plus a little friendly competition is fun!)
5) we love, love, love JellyRolls on the Boardwalk.. Its a must evening entertainment.
6) Go to Chef Mickey's or any other Breakfast with Characters meal....IT is so sweet to have a pic of you & DH commemorating your anniversary & haing a Disney character in it.
7) Make sure you each get to go on your favorite ride more than once! That's what is great about just the two of you... Only doing what you enjoy & not having to worry about what the kids want to do..
8) Definitely get the Anniversary buttons... It was fun hearing Happy Anniversary occasionally as we walked around the parks... & we enjoyed looking for other couples who had pins too & wishing them a Happy Anniversary! We had several enjoyable conversations with other couples...
9) Make sure you reserve yours & his favorite restaurant ahead of time!
If I think of anything more that we did on our anniversary, I'll write more. Debbie