The Jones Act limits foreign-flagged vessels from transporting passengers between U.S. points, so island transfers must use U.S.-registered boats. Ren... Read Moretal taxes (Sales + Occupancy) are high, often 12–15%. In regions like the Florida Keys or the Maine coast, "Quiet Hours" and environmental "No-Wake Zones" are strictly enforced. Travelers should verify if their island rental requires a boating safety certificate, which is legally mandated for certain age groups in most coastal states. Read Less