In addition to NCL’s recommended testing service, I believe there are also telehealth testing companies that medically proctor your test, but you supply the test. They say that any unopened over the counter at home test is good. You sign up, reserve an appointment and take the test. They then email you the result. So, you could bring tests from home or buy them in New York.
One company I’ve seen is called OnPoint. It’s about $20 for each test monitoring session. They say they have appointments 24/7, so you could do it at your hotel. (I’d try to find reviews of this company from customers if you can). There are likely other companies that do this as well.
As one earlier response here stated, testing is readily available in NYC, at mobile sites, Urgent care clinics, and CVS.
Maybe this won’t be needed in September if we’re lucky!🤞
I hope all goes well.