If you've received a letter from Brian at the City of Golden Valley, Park and Rec, please read on.
You may hold on to your Shelter key until the end of the season and return it to the Park at Rec Office at that time. They will issue you a refund when the key is returned.
Coaches really do need to turn in the keys after each season and should not retain them for future seasons. You will need to get a key at the beginning of the next season.