I just read a recent release by the Expo Organizing Committee regarding accomodations in Yeosu. It contains a bit of new information on lodgings and you can read it here. [NOTE: no longer available] That’s the main site, then click on Expo 2012 –>Expo News. It summarizes the types of accomodations available and gives you the hotline number to call with your questions. That number is 82-1577-2012 (82 is Korea’s international call prefix number). It looks like there are still quite a number of rooms available, so if you plan on coming over, give a shot at staying here in Yeosu.