How to set up and use airline boarding passes in Wallet

TidBITS:

I still don’t enjoy airline travel, but I’ve done it enough that it no longer stresses me out to the same extent, even as dealing with invasive and unpleasant security requirements has gotten far worse. Plus, thanks to the Internet and the iPhone, the logistics have become vastly simpler. Being able to buy tickets, check in, and print boarding passes online was the first step, and the next major improvement came when Apple released the Passbook app, since renamed Wallet.

I’ve been using Passbook/Wallet as long as has been possible — it took smaller airports like Ithaca a while to get the necessary scanners — but as much as I liked eliminating the need for paper, there were many problems early on.

I don’t fly enough anymore to have been able to use the “new” Wallet (nee Passbook) but I remember when I did many years ago, it was a PITA. Has it gotten better, as Engst says in this article?