Thanks a lot for your understanding and help!
Normally, I wouldn't be worried too much about renovations etc., but reports about the situation at Poly really sound alarming.
Furthermore, because we are from Germany (and flights to the U.S. are quite expensive) we don't have the possibility to go to WDW very often - quite frankly it probably will be a once-in-a-lifetime experience.
Background: For me, it is not my first trip to WDW, but it will be for my boyfriend. In 1997, when I was 17 years old, my parents took me to WDW and we stayed at the Beach Club. This trip to WDW is the most memorable journey of my childhood - it meant so much to me!! (in Germany, being a huge Disney-fan is not common. Especially for teens it is quite uncool).
Now, as a grown-up, I want to repeat this trip, this time with my wonderful partner and boyfriend.
And, of course, staying at a construction site is not very nice in my opinion, especially, when you travelled for soo many miles to come over to the U.S. Therefore, I try to organize and gather as many information as possible.
Perhaps we are "on the safer side" when choosing Yacht Club for September 2015. Originally, I would have preferred Beach Club, in memory of the great trip with my parents in 1997. But I really want to enjoy the resort where we stay in its full splendor, without contruction walls or the like.

I can only imagine how much your planning must be! Reading this post of yours, and how others added their thoughts and opinions - I say - BEACH CLUB!

Polynesian is such a mess because they are adding the DVC units, Beach club already has DVC units. Polynesian is rehabbing the pool, from what I've read they need to add a safety type fence, SAB has that, so I do not foresee huge renovations at all at Beach Club, simple renos yes, but I do not think it would interfere with your memories!
Go book Beach Club, and I'm sure you will continue to debate your choice, as I have debated my choices... but I picked Beach club for many of the same reasons you have, and now when I read things about Yacht Club, I realize it wouldn't be the experience that I want, so those posts reinforce that I'm happy with Beach club!!
