We are staying at the Hyatt Regency Downtown. Does anyone know if there is an open gaming area there, or at any other places downtown?
You can grab any open table in halls A-D or at LOS and play. Just check with the Event HQ for that area to make sure the table is available for the time you need.
Several of the downtown hotels have areas for open gaming as well.
There are open gaming tables in Union Station, near the Omni Hotel. Ask at the desk, and they can direct you to the free tables. Please ask though - there are games running here on Wednesday, so you don't have to move in the middle for games areas that are reserved.