No need to worry about the girls: they don't look at the sun. Only people do that.

The solar flux density on earth is about 3 times 10 to the seventeenth photons per centimeter squared second. In order to view the sun you should use shade 14 glass. That will reduce the flux density by about six orders of magnitude. If you are in an area where there is totality, during totality you can, and should, look at the corona directly without the 14 shade glass. It's a sight you will never forget. After totality, back to the shade 14 glass.

Do not use any magnifying device such as binoculars, etc. Fried eyeballs just ain't that much fun! --Michael Potter