I'm returning to the Caymans for 2 weeks this summer. Having been on Shaggy's Stingray City tug boat, I'm also leaning towards returning with CPT Marvin. I have a 12 yr old who says she refuses to swim with the Stingray's. I'm looking forward to see if she'll pull an "Ann" on her trip. Like Shaggy, it was a great trip for all. We really did notice that our guides on the CPT Marvin tour did help us more than the other guides appeared to, and assisted us in actually holding a ray.