Call the hotel and ask to speak to guest relations. This should transfer you to someone in the club area (it was shared with the downstairs restaurant type establishment last I saw). The staff there are generally very helpful explaining things as they are generally the ones that allocate the rooms for Ambassadors and Royal Ambassadors and handle the amenities. They have always been pleasant (along with the Front Office Manager) and always remembered me by name and helped me plan excellent stays (granted I was an RA but an Ambassador should still receive excellent service). Give that a try and see what they say. Honestly, there may not be anything to upgrade to but they will try their best to do so.

And the One Bedroom suites do only have one King Bed but they are spacious. Most times I was there we had a king and a rollaway and that worked just fine. Again, they are helping you out already and they are generally very accommodating there in my experience so I'd just enjoy your stay in your suite and enjoy the area