Blaine has four large picnic shelters that can accommodate groups up to 150. These shelters are perfect for graduation parties, family reunions, team picnics, birthday parties, and more! All other shelters are first come, first serve. To reserve a picnic shelter, visit BlaineMN.gov/Register, select Facility Rentals, and submit an online request OR complete a Facility Use Application (PDF) and submit payment before a permit will be issued .