We were at a Corp of Engineer park when a shut down occurred and had already paid for an additional 5 nights (cash). They came around and told everyone we had until noon the next day to leave. We used rvparkreviews.com to locate other parks in the area. When we went back thru the next spring, we made a notation on our envelope of dates we were staying and that we were taking the additional 4 days credit from the shutdown times and stated if there was a problem to please come see us at the site. No one ever showed up asking for additional funds. We gave dates and details in the note so they could have verified we were indeed in the park at the time of the shutdown and what our payment had been.