Granted I drink the kool-aid but for our family, there is no debate, Poly all day long, especially Poly CL. Here's my best attempt at your specific questions:
- I can see why 5 in a room would be a concern at Poly. Personally I think staying CL makes this much more manageable since you have the lounge space to use. For example, you can hang out in the lounge when others are getting ready, or still sleeping, etc. The Poly CL lounge never closes so it's an ideal "extension" of your room space. 5 in a room is still tight for some folks, but at least the lounge gives you another place to be.
- I don't consider Hawaii far from the GCH or transportation. Compared to AOA, the overall Poly grounds are TINY. It all depends on your definition of a "far" I guess but we very much enjoy/appreciate Hawaii's relatively central location. Just steps from both pools and easy walk everywhere else.
- Laundry - you do have to walk to another building that's closer to the bus stop, but again, not a far walk at all. Machines have an app to track the time so you don't have to sit around waiting. We don't always do laundry but have a couple of times and it's always been a fine experience.
- Yes, CL lounge is close to both pools. Just steps away. That's a big draw for us.
Whatever you decide, hope you have a great trip.