We go down a couple of times a year. Have boated all the way from Myrtle Beach to Savannah.
Charleston is our favorite.
As for the dually, PARK it and go by taxi.
Go to "Poogins Porch" for breakfast on morning. It is GREAT!
Hanks Seafood down town by the slave market is very good as well.
Make sure you get over to Patriots Point and take the boat ride out to Fort Sumpter, and tour the aircraft carrier, sub and battle ship.
Our favorite place to go my boat is "Shem Creek". GREAT food over there with three restaurants. The food at RB's is very good.