We are so thankful for Benjamin; he is such a good little guy. When we had to postpone the trip, he didn't complain at all. He just said, "OK," and went about his business. He's never once said he wished we would leave now, or asked how soon we will be leaving. He is very patient.
The flip-side of that virtue is that, in dealing with him, like in dealing with his time-impaired papa, one has to be very patient or very persistent. Like when you want Benjamin to finish eating a meal in under 45 minutes.
Nonetheless, even his patience has limits. The most recent time we played Candy Land, he got sent way back on the track after an already long game. After that delay, he decided to read the "magic rule" allowing us to finish the game sooner. (After he won, though, he wanted me keep going until I too got to Candy Castle.)
We are pretty sure we're spoiled with him on patience. While he does have some other traits that can be difficult, in the scope of kid challenges, we'll take 'em any day. Once number two joins the family, like with any new addition, we'll probably see just how spoiled we are.
As to any quality with a child you don't yet know, it's impossible to predict. I'm human, so I can't help but speculate. Will being adopted influence her patience or other long-standing character traits? Surely it will. But how? If she has spent her infancy in an orphanage, sadly, she may be well used to waiting. By contrast, some orphans from foster homes are rightly showered with attention and care. Further, we've heard stories of orphanage-raised babies who, once they get a feel for their lifelong mom and dad, don't want to let go of them.
We will judge none of it but just give her what she needs. I've met and heard so many stories of biological siblings who are almost polar opposites, I think the most shocking thing would be if she were just like Benjamin. We're not counting on anything except a child that we will love no matter what.