Don't expect too much of Priority Pass. There are some large airports that have no Priority Pass lounges, at least not anymore. There may be limits on access time AND number of PP cardholders. It is not unknown for there to be a line of PP cardholders when premium customers are still being admitted.

Having said that, I WAS able to use PP on a recent trip. Nice enough to have if it comes with a credit card but I certainly would not pay otherwise. If you think it will get you lounge access at all airports you are likely to be very disappointed.