Presidents and normal people not involving politics. And they go there because it is also a hotel.

I kind of don't agree on that answer

No, you have a far higher chance of being in a car crash involving normal vehicles.

Yes, walk in tubs are considered safer as long as it is made of some sort of non slip material. Most accidents involving bathtubs occure in normal tubs.

Since it is a hard ceramic, it is not prone to staining by normal foods and normal cooking. There is a notable exception, however, involving iron and cast iron. Contact with either of these can cause unsightly brown stains that are impossible to remove.

No. If there is no chance of pregnancy, then it could be a sign of a problem involving hormones, weight, or stress levels and should be checked out by a doctor.