The general public doesn't start paying attention until the marketing push goes into overdrive. Their ears perk up at announcements, but it's not until it's hammered home with the big marketing push.
That is why what Disney did with Star Wars Land is so odd. They perked the ears the the SWL announcement and then started a huge marketing push for "Only at DHS!!!" only to have, a 20 year old ride, a lame M&G, a stage show, and fireworks.
When the marketing push goes into overdrive again when the land actually opens, meh.