We stayed during the Princess 1/2 weekend, and oddly enough, Disney gave us money back!! ($22, but hey, its $22!) Actually, it was because we were able to change our room from a bunk bed room to a 2 queen bedroom.
So, we did spend less because of a lot of disinformation on Disney's part. We were going to go into the Hollywood studios and have lunch at Hollywood and Vine, but since there were no lunches we took a early dinner res. No one told us that there were no characters at dinner, which was the entire reason to go to lunch and then stay to watch Disney Jr. show (baby LOVES DisJr.). Thankfully we were able to cancel the dinner with no penalty. The way I found out was I called WDINE a second time the night before the dinner to try and reschedule the time. At least that CM who talked to me was informative.
So we didn't go to the park - no point. Disney lost park $$ right there. Plus AKL is almost like a park - we didn't go into any parks that weekend, stayed right at the hotel and there were tons of cool activities and we all enjoyed ourselves.
I have to admit though that it was kinda tempting to run to Mara and get snacks - I did get a coke or two, but no more than usual. If anything, MD makes me MORE aware of spending money, and less likely to do it.