I'm definintely one that likes a couple of 'events' when I go to WDW. Pick a tour, or a restaurant show (Hoop de doo, or the Luau) so you have a little structure to the trip.
I don't advocate upgrading your dining plan, for women, that is a lot of food, unless you are naturally big eaters. I 'd take the existing dining plan, schedule a couple of 2 credit dinners and wing it a couple of nights - but that's just me. Don't over plan the meals, sometimes it's just fun to sit in the bars and talk (La Cava, or the bar at Prime Time) or you might want to do the monorail crawl, having appetizers and drinks at the different bars on the monorail line.
With a DVC villa, it's also fun to get a bottle of wine or two at France or Italy, pair that with some snacks and have a relaxing evening at the villa.
I always do a spa day (morning) when I'm at WDW. I usually do it the first day I'm there since I come in on the red eye and it's a nice way to get the trip started. (and get refreshed and get a shower if my room isn't ready.) If you're staying at SSR, try the SSR Spa (the nicest on property), if you're staying BWV or BCV try the Mandara spa at the Dolphin, it's very beautiful and the treatments have always been great!