Welcome Rentlady..circumstances can dictate your arrival. For us, we precruise,and we need to get the rental car back, at a certain time, as not to be charged an extra day,sometimes get a shuttle, so all things have to be timed just so...Driving into a port,and having the pleasure of avoiding the crowds, is a plus when you can do it. Flying in that day, also depending on your arrival, can make it tricky..plus the, I want to get onboard ,NOW. kicks in