Just got back from the Poly last week and we also inquired about moving our luggage to the swan. The answer was we do not "officially" do this, but we "can" do it for you (aka we can do anything if the price is right a.k.a. a big tip. We decided to let dh and ds take a taxie. 2 dss and I took monorail to MK and then swan bus. Guess what dh was waiting for us in the lobby and ds was already in the room with the luggage. Cost of the taxi was about $10 plus $5 tip. Compare this to last year when we had disney transfer our luggage from the poly to the yacht club. 7 hours later and then still no luggage, despite the huge tip dh gave them. Good luck deciding.