Safe to clean iPad screen with alcohol wipe? I ordered a glass screen protector for my iPad and have just received it. In instructions, it says I have to clean the screen with the given alcohol wipe. Is it safe to use an alcohol wipe on iPad screen? I read somewhere it damages the screen...
Alcohol can probably damage the coating on the display. I wouldn't use an alcohol-based cleaner. 

I accidentally used an alcohol-based liquid to clean my 2011 MBA's screen and the coating is visibly damaged by it.

See this Apple Support page: https://support.apple.com/en-us/HT204172.