Nope! Carnival parade is NEVER on a Sunday, and July 4th falls on a Sunday this year. You people are arguing over nothing. And yes, the car rental agencies ARE closed on parade day. 'Nuff said.

“ Leaving St. John on July 4th ”

I had planned to stay on St. John this year

 from June 27th to July 4th, but when we went

 to book a villa, our rep explained that it will be

 very difficult to leave the island on the 4th of July

 due to Carnival. We're considering moving our 

departure date to July 3 - does anyone know if it's 

difficult to get in/out of St. John on this day?

Reply:

Everything is closed on July 4th, including car rentals 

so you will have to return your car on the 3rd. 

It will be hard to get a taxi so you may have a very 

tough time getting to the ferry.

I would change it to the 3rd or spend your last night on STT.
Reply:
I wouldn't say everything is closed, actually, I would say most places remain open. You would have to check with the car rental companies to be sure. They do close the streetdown for the parade late morning. So you would have to get moving early (before 10am). The ferries will be very busy, and town will be congested. 


Reply:
Perhaps you know something I don't but in trying to help friends that wanted to be on island for Carnival, they were not able to find a car rental agency open on the 4th.