If it's the place I'm thinking of, there's no fee. They ask for a donation, but as my guide told me, when we went on the Hilton Head Island tour, Disney HH donates a large amount, so she told me that essentially, I was paid for! It's a fairly small place, Chamber of Commerce downstairs, historical room in the middle, and ecology room upstairs. Also, there's a nice large deck out back for watching nature. I went there twice-once on that tour and once with DH. There's a nice spotting scope upstairs for looking out the back window at the birds. For someone who loves nature, or is interested in the history of the island, it would be a pleasant way to spend 1/2-1 hour.