This episode made basically no sense, but I have pretty much resigned myself to the fact that Doctor Who is not a show that prioritizes making sense very highly...or sometimes, at all. :P If it works on an emotional and/or entertainment level, I'll usually give it a pass, and I thought this episode did.

I was too busy being proud of Amy and Rory and how they've grown up and grown into each other, and also crying, anyway. :P