Anyone been to Dry Tortugas?

[Jim in CT]

My wife and I will be in Key West for a few days in May. She likes fishing, snorkeling, and she loves National Parks. So we booked a captain to take us on an all day trip from Key West to Dry Tortugas Nat'l Park, 70 miles each way in his 32 foot Yellowfin (twin 300's). We'll be at the park all day, we can snorkel, fish, and explore the park (which is an old fort the Codfederacy built as a POW camp during the Civil War...if you have to be a POW, that was the place to be stuck!).

Anyone ever fished out there? I hear it's really awesome reef and wreck fishing.