I loved the Printshop, too, it looked so beautiful. I really liked the way the screenwriters had cut down some of extra stuff, like Claire's dress being ripped and all that guff about her in the House of Joy with no clothes. The breakfast scene was very funny.
Early 40s is quite normal for reading glasses (in Book 7 or 8?, both J & C get spectacles from Edinburgh). Being a printer with candlelight would play havoc with your eyesight.
A lot of the dialogue during the reunion is straight from the book, I think. I liked the beginning showing Jamie's pov, as it helps reinforce his shock. He lives a pretty dangerous life as a traitor, publisher of seditious materials and smuggler, as he doesn't have much to lose. Then Claire comes back into his life, and I'm sure there's a bit in the book, where he says he'd forgotten how to feel fear.
I agree that it's a shame we didn't see more emotion over Brianna's photos, or see Claire give him Brianna's kiss. I wonder if it was a deleted scene.