What is the best house to request for either a patio or balcony and close to TTC and GCH ) if that is possible.
If you want to be a pretty much equal distance away from the TTC and the GCH I would suggest either Tokelau or Rarotonga. My preference is Tokelau as one side is facing the quiet pool while the other side is facing the gardens. With Rarotonga you risk getting a parking lot view but the landscaping even makes that look good.
Do most of you request a building? or let Disney work their magic and see what you get? Which buildings have the larger rooms?
I usually request a building but that's just my Type-A personality.

Usually I'm travelling during high occupancy times so while I put in a request, I just let the CMs work the Disney magic that they can for me. I believe the newer buildings (Tokelau and Tahiti) have slightly larger rooms. I've stayed in Tuvalu and Samoa and those rooms still seemed quite large to me.
If you make a request, do you think that keeps you from getting a surprise upgrade?
Maybe, maybe not. It depends on your CM and the occupancy limits of the resort. I know last August I made a spefic request for a room in Samoa facing the volcano pool. I was granted my request but frankly, if I'd 'requested' myself out of concierge I wouldn't have been upset. The kids wanted to be able to see the pool from the room so that was the most important to me.
I would really like a nice room since we probably can only afford to stay here once, so I am trying to see what would be best.
Oh, I totally understand! I truly believe (and others here will also say)
all of the rooms at the Polynesian are nice.

From lagoon to garden views there isn't a bad room on the property.
Is the resort really that big that the walk to either the TTC or the GCH is really that far? We stayed at ASMu last time and were in the farthest room from the bus stop so I cant imagine that the walk is anywhere near that long walk.
I've stayed at ASMu and it isn't that long of a walk at all on the Poly grounds. From Samoa it took maybe 5 minutes to get to the TTC and about 30 seconds to get to the GCH.
Hope that helps! I'm about to pay off my package for the Poly in two days and had a lot of fun answering your questions.
