Ordered MY LR Jan 13 (Texas USA), Could not find out when it would come or what it would come with. Delivered May 13. Had 14-50 P => 10-30 R and 10-30 P => 5-20 R adapters, so I felt comfortable that I could adapt most anything I would encounter down to 120v 15a. So I also ordered a wall connector and a J1772 adapter to cover me at charging stations. And then Amazon Prime didn't ship the adapter (in stock) for a long time; the car was delivered with a J1772 adapter, and a mobile charging kit, so I canceled the Amazon order. But Tesla couldn't / wouldn't tell me if it would work to use the adapters to connect from a 14-50 R => 5-20 R to the 5-15 P adapter that came with the mobile connector in the charging kit that came with the car. Eventually I was able to buy from Tesla a 14-50 P adapter to the mobile connector. Happily, now I can charge from a 240 50a dryer or RV outlet, any J1772 charger or any residential 120v 15a outlet. No range anxiety here.
It is a little difficult to be unable to determine what will be delivered to you, until you have paid for it and have access to look in the box, but that's how it works. My suggestions to new buyers are:
Be patient and wait and see what you need, before you start buying stuff - there is no way to find out what you are actually going to get.
Wall connectors are wonderful, easy to install and a really nice solution for charging at home, if your situation will accommodate one.
If you didn't get a mobile charging kit with your car, then buy one from Tesla.
When you do get a mobile charging kit, if it didn't include a 120v 15a adapter, buy one from Tesla. If it didn't include a 14-50P adapter, buy one from Tesla.
IMHO, Tesla superchargers are about the same cost as other charging solutions and so much more dependable, available and reliable, there is very little need for a J1772 adapter. If you get one with your kit, great, if not, it's likely a never mind.