My wife has her passport and visa in hand. We are getting ready for our move to America, but we need to settle a few disagreements first. 1. My wife already received her first round of vaccinations, but still hasn't gone back for her final vaccination shot. Some Chinese wives she has spoken to in some QQ groups say that the second vaccine is unnecessary. I say better safe than sorry. Does she need this final vaccine before leaving China, or can she get it in America. 2. Also, we are looking for the cheapest possible flight back to NY for this summer. All of the cheapest flights have overnight layovers in Tokyo. My wife thinks that she is not allowed in Japan and will get sent back to China. I disagree. Can we buy this ticket with nothing to worry about?