The answer is simple: no.
If your wedding invitation says 4pm, that’s the time the actual ceremony begins. That doesn’t mean you start the ceremony 10 or 15 minutes early so that you can actually walk down the aisle at 4. As with any other event with an indicated start time, your ceremony should start at the time on the invitation. Also, you don’t want guests arriving a few minutes before 4pm only to be told that they can’t enter because the ceremony has already begun.
Planning a honeymoon? Why not travel to the Amalfi Coast!
Another question I get quite often is this one: I’m afraid that my guests will be late to my ceremony. Although I want my ceremony to start at noon, is it okay to put 11:30am as the start time to compensate for late guests?
Again, the response to this is no.