Is it easy to get to the check in form the parking? Do you have to carry all your luggage, or is there a shuttle, or is it not that large.
When you park at the port, you first pull up to the terminal and drop your luggage off at the terminal, then you go park your car and walk back.
When you head home, you tip a porter to haul your luggage from the terminal back to your car, unless you want to haul it your self. When it was just the two of us, we could do that, each holding/rolling a pair a suitcases. But now that we have to pack another bag for a toddler, we make use of the porters.