I've been going to Hilton Head for years. I spent 6 weeks there for a summer once. I only go because my grandparents live there. Like someone said, it's a whole lot of retired people, every other guest is from Ohio, and it's pretty family oriented. Plantation is key. If you're in the right plantation, you'll have fun, if you're not, it's gonna fucking suck. I only really know Sea Pines well, but it's definitely one of the best plantations and probably your best bet for young people and some nightlife. Enjoy it though man!