If you fancy travelling a little father down the coast, I can thoroughly recommend Sanibel and Captiva Islands.
There are no high rise hotels, lots of little waterways, bike paths and nature reserves. It has a really laid back feel, almost Caribbean.
There is not a lot in the way of nightlife. Most people enjoy the sunset then go out to eat.
It does tend to be a bit more expensive though.
Cheers
Kev