We rode over and back to PEI on the bridge. Going was free, coming back cost us $55.
Children: Beginning June 1, 2009, U.S. and Canadian citizen children under age 16 arriving by land or sea from contiguous territory may also present an original or copy of his or her birth certificate, a Consular Report of Birth Abroad, a Naturalization Certificate, or a Canadian Citizenship Card.
We stayed in the central part of the island so we could use our toad to go all four directions easily. I think our campground was in Oyster Bed Bridge and was very nice.