I returned yesterday from a quick 4 night trip. Even though we just returned from 10 nights last month, my wife wanted to spend her 40th birthday in SXM.

We arrived in MIA at about 11:20 am. I had already completed the 4 questions in the app while in air, just had to wait till we landed to send the data to receive a receipt on my phone. As soon as we landed, I turned off airplance mode and submitted my declaration through the app. Within a few seconds, I had my receipt with qr code on my phone for both my wife and I.

After getting off the sky train, there was a sizeable crowd in passport control. I did not really pay attention to the other lines at the kiosk or those going directly to an immigration officer. I would say it was busy but not as bad as you had described the other day.

The line is basically the same as global entry, except global entry goes off to the left side and mobile passport app goes to the right. There was no one in line at all and 1 couple with the officer scanning their receipt. After waiting about 20 seconds, a second officer opened up and called us up. After showing him the qr code receipts for both my wife and I, he asked me to scan them on their reader and he looked at our passports and asked where we were coming from. After scanning the qr codes, he said have a nice day.

After waiting what seemed 15-20 mins waiting for luggage, we claimed our bags. There was a dedicated line split up again for global entry on one side and crew/mobile passport app on the other. We waited about 1 minute to get to a customs officer. We scanned our qr code receipts again and the customs officer asked if we had any alcohol and we told him we had a few bottles of wine and rum and he said, ok have a nice day.

It was really an easy experience. It was nice just answering only 4 questions on the app and not having to list everything we had purchased. I would say if this rolls out to all ports of entry, other than having access to Pre-check, I don't see what benefit global entry gives you (when you are returning to the US). We were going though TSA checks by 11:45 am. The randomizer that TSA uses sent us through the pre-check line, so clearing TSA was rather easy.

I would definitely recommend using the Mobile Passport App to clear C&I anytime you get a chance.