According to the Slide the City website, registration for the Detroit event is “opening soon,” and you can expect to pay $20 for a single ride wristband ($15 if you register early), and $60 will get you unlimited slippin' and slidin' for the whole day. All wristband packages include a mouthguard (your own, not a rental!) and even a water gun, just in case you’re not getting wet enough. They’ll also throw in a free tube if you pay up for the mid-tier and higher-end wristbands that get you more slides.
A few other Michigan cities will also get in on the slippery craziness, including Lansing, Flint, Grand Rapids, and Ann Arbor.
Here's a couple more shots from previous events: