A group of 6 are traveling this Thurs to St. Martin and then connecting to St. Barths via ferry. Villa Concierge strongly advising to bring carry on luggage only due to SXM arrival delays with luggage issues. Is this really an issue? Can some comment on the amount of time it took to get luggage at SXM? We are flying United, Arrival eta 2:39pm, ferry departure is 4pm, and check in closes 20 min before departure, so not a lot of time to make it to ferry terminal. Thank u!