We used On Point with our free tests from our home prior to our June 19 cruise. The appointment was easy to schedule. Have your driver's license, insurance cards, and confirmation number ready. We used a laptop because we thought it would be easier for both of us to see and be seen on that as opposed to a phone or tablet. I set everything up ahead of time in an area with good natural light. The proctor had both of us test together; we just followed her instructions as she watched. When the 15 minutes were up, we held up our test strips one at a time, and she declared them negative. We got the email results within about 15 minutes. I had the letters on my phone but also printed them out; I think that's easier during the embarkation process. The letter was sufficient; we didn't need a QR code. Very easy process.