We used our Priority Pass cards on arrival by just walking over to Club Mobay after collecting our luggage from the carousel and showing them. There was a guy there who tagged our luggage and kept and eye on it outside the club for the 10 minutes we were there. It was nice to be able to use the bathroom there to change and wash hands, then get a drink for the road on our way out. I even brought an insulated mug that they filled with rum punch. It was delicious! We would never have used Club Mobay on arrival if we would have to pay for it. We tend to travel on mid-week days, so MBJ is never all that busy when we arrive. We also used it on our way home by showing our passes at the Mobay desk after checking our luggage. It's another great perk of the Chase Sapphire Reserve card