My wife and I are going for 2 days in November.
We are doing Epcot and AK. Epcot for Food and Wine and AK because that is my wife's favorite park.
We are hitting
MVMCP, so we are getting MK as well. However, if we weren't doing that, we would still choose Epcot and AK.
If it's you and your wife and several of your friends, you all will have fun no matter where you go. Enjoy your 40th!