I have had several boxers and coaches from our gym go there. They all were treated well and had a good time. If you respect them they will respect you.
Mayweather's style is the shell I know of a fighter who went there and suffered a hand injury. So before you go learn how to side up! Don't throw to the body against the shell since it's likely to result in a broken thumb. Mayweather's use the elbows to block body shots including the right-cross. So the likelihood of injury is high.