You know with 22 visits under your belt, you might be better served
answering questions on the Disney Moms Panel than asking them! While it is hard to think that there is an experience that you are not already well aware of, here are a few suggestions.
When it comes to something to do with the kids, how about renting a Pontoon boat at the Boardwalk marina? Take some lunches out on the boat with you and explore the waterways that wend from Hollywood Studios all the way to Epcot.
As for Adult-only valentines ideas, I would recommend trying a romantic dinner somewhere that is new for you. Most guests overlook dining in the Swan and Dolphin resorts, so perhaps dinner at
Todd English's bluezoo or
Il Mulino?
Ultimately, if budget is not an issue, you should consider renting the
Breathless 2, a Criss Craft-styled boat that can take you around the Boardwalk area waterways, and you can even watch Illuminations from a vantage point few Walt Disney World guests ever get to see!
Have a romantic vacation!