Interested in the boat cruises from Navy Pier. I see where the Spirit of Chicago and Mystic Blue Cruises offer a 2 hr lunch cruise this Sat. Forecast shows possible rain/snow for Sat. Do you have any info on the cruises if they are worthwhile even in bad weather? Is one better than the other? Cost is app $36 for cruise and buffet lunch. We are limited for time and getting the most in so would this be a good site seeing opportunity?