Shoulder Season Rates Our 2023 shoulder seasons are May 13th-June 30th and Sept 2nd- Oct 10th Pricing: $1300/week or $186/night (minimum 4 night stay) duneside Sandcastles easily fills the needs of everyone from individual couples to groups of up to 14 celebrating reunions of families or groups of friends. Learn more about duneside meadowside Sandcastles Beach House is a mere three minute walk along the path to the finest beach on the island. With our beach’s sandy, broad expanse and gentle slope it is perfect for family fun. Learn more about MEadowside