We chose a time slot on the website. We spent time taking photos at One World Tower across the street and then stood in line at the memorial for 15 minutes. Even though we were 15 minutes early and hardly anyone was in line, they made us wait until the time that was on the ticket.

The open area, sure. The museum no.

Andy Card

sorry, I don't know

Yes the museum is closed on Tuesdays and Wednesdays so that they can be open on the weekend.

We bought in advance and were able to enter more quickly. The lines for tickets were very, very long. Also you must have your vaccination card and ID.

The answer above is correct just need a ticket for museum

Hello, Indeed the website says children aged 5 and above must show proof of vaccination. For the 9/11 Memorial, the outside area may be sufficient for a 9 year old. It is quite impressive on its own. But, if I read the NYC requirements properly, kids ages 5 and up also need to show proof of vaccination to enter a restaurant and other public places. So, if your child is not vaccinated, it may not be a good time to travel to NYC. I would be surprised if they make an exception based on where you are from.

Absolutely.

We had early access. Tour had about 20. Definitely worth the extra cost.