PEI Tourism Lic # 2101250. Located on the South Shore of Prince Edward Island, only 10 minutes from Borden-Carleton with a view of the Confederation Bridge and the Northumberland Strait , which is known for having the warmest waters north of South Carolina. Sandy Feet Retreat is the perfect place for a family vacation. At low tide, miles of red sand bars are exposed, that are warmed by the sun, perfect for walking, building sand castles, beach combing, clam digging, or swimming.