Seconding the doors being open. On embarkation day the doors are propped open and you can freely walk down the hall to the suite lounge/Coastal Kitchen. Both times we were in a GS we went right up to the lounge and spoke with the host to verify our Coastal reservations. And there were only a handful of times on both cruises where those glass doors were shut...typically in the middle of the day or later at night.
Also, there are bathrooms on Wonder. Just past the bar area where the lounge blends into Coastal.