Safari Vacation How Can I Restrict Everything On My Mac Except Safari?

How can i restrict everything on my mac except safari? - safari vacation

I am using on holiday with my family and my father to the Internet for financial news. However, I am today and have to leave for the rest of the week to use. I did not want himself or someone else in my family used to sniff at my computer. I need a way to block access to everything except Safari.