I went on the Menominee River whitewater rafting trip. I was kind of nervous ahead of time, but overall it felt relatively safe but still an adrenaline rush. The guide did a really good job teaching us what to expect and he was excellent at navigating the raft. You will get soaked, so dress accordingly. I would also recommend hydrating well beforehand since you don't have access to drinking water during the trip. We had a lot of fun and I would definitely recommend this as a fun way to spend half a day.