Flight
The Charleston (CHS) airport is the best place to fly into/out of for the reception. You can also fly into the Columbia (CAE) airport for the temple ceremony, but we would not recommend flying out of it.
House Or Rental
There are wonderful Airbnb options across the city. Consider downtown Charleston or the nearby suburbs of Mount Pleasant (where Stephen lives) or West Ashley.
Rental Car
Hotel
Suggested lodging option