We have parked at port on several occasions, and most of the time - no problem... Last time we left a cooler in the car (I had drained removed any known food items). They evidently can smell leftover crumbs because the cooler had hundreds of ants (maybe even thousands) in it. I don't think we found ants anywhere else int he car...
fyi...
And, oh yeah...we paid $10 a day ($70 for the week long cruise)...paid at the time that you park...