If you go fishing on the pier at Cherry Grove you do not need to have a fishing license. You have to pay to fish on the pier. The pier is open year round.
You do need a fishing license to fish off a dock, the ocean or in the marsh.
While you are here on vacation, you can stop by Boulineaus and get your 14 day fishing license or a one year annual Salt Water fishing license. http://www.boulineaus.com/
A great place to get information is the South Carolina Department of Natural Resources website. It has all the infomation you need about fishing on your vacation.
Here are the 2012 pricing from the States website:
Non-Resident Saltwater Fishing
|Duration||Type of License||Price||Notes, Prerequisites|
|3 Year||Saltwater Fishing License||$105.00||Valid for 3 consecutive license years, expires June 30th of third year.|
|Annual||Saltwater Fishing License||$35.00||Valid through June 30th.|
|14-day||Saltwater Fishing License||$11.00||Valid 14 consecutive days.|
|Season||Shrimp Baiting License & Tags*||$500.00||Season dates apply, Shrimp Baiting License Application (Adobe PDF).|