I was thinking about this the other day. A few weeks ago, I visited a theme park and I hate the hand out maps that they give you, they can sometimes be hard to decipher (can't find certain restaurants or rides by the way they label it). I was thinking, if there was an app with maps to certain theme parks (some of the more major amusement parks), then finding your way around would be easier. You can have a search option so you can search for rides/food/gift shops. There could also be an option where if you click on a certain ride, it would give a brief description or height requirements. This is just something that I thought would be convenient for iPhone carriers.