The ferris wheel is pretty much the only reason to go to Navy Pier. I was visiting this past weekend, and on a rainy Saturday, we headed inside to avoid getting wet. The stores are sub-par and were perhaps too reminiscent of the usual St. Augustine tourist fare, and it seemed that half of the place was made up of convention space. The water taxi's and boats are cool. We saw the fireworks that night that were incredibly low and were poorly set to some pretty quiet music. Perhaps this was due to the poor weather earlier. So, considering how great it looks from the top of the ferris wheel, there just isn't that much to do at Navy Pier.