There are a couple of others "etiquette" type videos on YouTube as well. I thought her's had one about where to charge too, but maybe it doesn't. One of the things that used to be the case, and I think it still is, is you dont want to share a charger circuit if you can. There are numbers/letters on each of the chargers 1A, 1B, 2A, 2B, etc. As I remember charger 1A and 1B share the same power source. So if there is a car charging in 1A, and you want the fastest charge, and there are spots available, you should really charge in 2A or 2B. As 1A and 1B share the same power and will slow down charging for the car in 1A and your car if you went to 1B.
Another good tip is to charge until you start to taper off. As you get closer to full, it will slow down. If you dont need to be full (and even if you do) it is best to get off as it starts to taper down. That way someone else can get in, especially if you do not need to be full. If you do need to be full (road trip) there is a school of thought (and confirmed by Kyle with OutOfSpec Motoring) that showed disconnecting and driving to the next super charger as soon as the car started to taper off was faster than charging to full and skipping the next charger. He set the Cannonball Run record for an EV doing that method. Kind of a cool video to watch if you really want to understand his approach to supercharging on a road trip.