I/We, the undersigned, being of 18 years of age or older and desiring to entertain ourselves and agree to leave the site used in the same condition as found; agree to clean up what debris and litter may be deposited during our stay, within the time period agreed to; agree to be responsible for any damages done to property within the area by ourselves or our guests; agree to ensure compliance with Section 123.47 of the Iowa Code (1983) respecting the possession of beer by persons under the legal age; agree not to interfere with other use of park facilities; and finally, agree to abide by all rules and regulations and all laws of this state.