Did anyone rent a pocket WiFi unit while in Japan? If so did you purchase it ahead of time or when you arrived? Also, if you purchased online did you pick up at the airport or have it delivered to your hotel? I am trying to decide what would be the easiest. I like to pre-purchase when we can but on our last trip (South Korea) we had a very difficult time finding the place we were supposed to pick up our pre paid sim cards. On the trip prior to that (Bangkok) we just bought sim cards at the airport, but looking at the prices of sim cards in Japan I think a pocket WiFi is the way to go. Anyway, I think having it delivered to the hotel would be awesome! But I am worried it wont arrive or we will have some other issue with it. Thanks!