Go ride and enjoy yourself, particularly the Fondo 'route', it could use tires on the ground.
In getting the FFFFest established, I've been in almost-daily-contact with City Parks & Rec officials. Fully communicated that repeat Fondo laps will leave ruts and trails on Credit Island frisbee course and open fields in a wide range of weather conditions. The officials written reply is that it is not an issue. Our Fondo is 100% in flood zone, and normal flooding will 'erase' any impacts. The City of Davenport, Parks & Rec, Levee Commission, Living Lands & Waters, River Action and other agencies that I have been in contact with are extremely enthusiastic and supportive of FORCs FFFFest, and the repeat & positive presence FORCers bring to Credit Island. Everyone is happy to have FORC there, even in a bit o' mud.
Go ride and enjoy yourself.