I am going through the same thought process right now, and actually your post inspired me to research fixed weeks more and I really see the value (especially at CC during Holidays). We have 2 twin daughters (6), so we are thinking 2 FW for Thanksgiving is a great option to pass something on to them that maybe one day they can share with their families. Or, like you said, we have 2 studios at the same time to share with family or we can convert to a 2 bedroom (probably not a full 7 nights though). It's such a hard decision, as we are also considering weeks 48 or 49. I also already own a resale at Poly, and if it gets too much we can always let that go as Poly availability at 7 months is pretty decent. I've been all over the place with this, and am hopeful to make a decision soon.