Budweiser river bend

While renting a Blue Mitsubishi in Florida on my last trip to Ft. Myers I found an item in the vehicle. I was looking for my cell phone and came across this under the seat. It looks like a money clip on a hinge and has writing on it. It is the Budweiser river bend and has the ___ annual and the year. I would like to return this to the proper owner. I have looked on the internet for this event (what ever it is) and have had no luck. If this may be yours feel free to call me.