I'm going to be in the minority here, but stay at All Star Movies. From your plans it sounds as if the 3 days at your parents followed by the 9 day off site house is when you planning on relaxing. If you were staying more than 2 nights, then I would recommend CBR because of all the reasons stated above. But if it is only two nights, and your just going to do MK, then I'd stay at ASMo. And it also sounds like you won't be spending much time at your room. I'd save the money and put it towards something else.
Take this with a grain of salt because I am the type of person who likes to save money on everything! i.e. my trip in May is 1 night at ASMu and 7 at ASMo. The 1st night was added later than the 7. (I can only book 7 nights on one ressie with my discount) When I went to add it, like I figured, there were no more CM discount rooms at ASMo. I could have stayed in the same room, but with only a 25% disc, or spend one night at ASMu and get the full 50%, I took the full 50%. It's an extra $27 that I can spend somewhere! And we can afford to stay in a moderate, but we won't be at the hotel much, and this way we can do more nicer dinners, or more activities or even put the extra money towards another vacation (Which I am doing. I'm paying for my friend to come, as a gift, and buying a 7 day PHP, taking the remaining 3-4 days home with me for my family to use in Dec.)