Question on mecca and saudi cities?

You have to provide doentation that you are Muslim in order to enter Mecca and Medina. If not then you won't be allowed in. Also there are guards posted at all roads leading to Mecca so you could get arrested if you tried getting into Mecca if you aren't Muslim and then you will go to jail and then get deported to your home country. Most of the modern cities like Jeddah are more Westernized but cities like Mecca and Medina are more Conservative. I also think you need doentation to prove that your Muslim to even get into Saudi Arabia.