Before you order
Almost every pre-purchase question turns out to be one of three: how many, which line-up, and how long. If you can answer those, you are ready. If you cannot, the answer is usually that nobody has yet counted how often two screens in the house are on at the same time. Two smaller questions come up often enough to answer here as well. The region you choose has nothing to do with the country you are sitting in, so nobody needs to be anywhere in particular for this to work. And the account should be in the name of whoever is most likely to read a message about it, which is rarely the most technical person in the house and often the most organised one.