Grant reserve, the Chicago Summer promenade Festival's free live performance had hundreds of people promenading the evening away under the stars. And this weekend characteristics the Chicago Air and Water Show, an annual free event that sketches about two million spectators to the lakefront. routinely, it costs cash to get here and stay here. But I discovered a aaround journey fare for under $225 from Memphis to Chicago O'Hare. I only use one carry-on bag, so I paid no luggage fees.