Thursday the 15th is our first full day at WDW (first visit as DVCers), so we might come by. We are planning on spending the day at Animal Kingdom, that was the park Touringplans - dot - com recommended. (we've never tried following their advice for which parks on which days before- so we'll see how it goes)
Since AK closes at five, we might leave early and stop in at the Mixer. We have dinner reservations at Raglan Rose that night at 7, so if we go to the mixer we'd probably re-schedule dinner to someplace at Epcot (do you think Epcot would be unbearably busy on a Thurs. night?).