The Mariner's Club has a windowed front that overlooks the walkway along the side of Tower 3. It is in the same row as the fitness center, gift shop, and Emeril's. We looked through the windows while we walked past and it looked really inviting and spacious for kids. There were only two kids in there at the time at computers and there were also 2 20ish attendants visible closer to the doors (don't know if they were locked) I want to say it was $10 or $15 per hour? but I'm not sure if there was a min. required stay listed.