Edge cases, answered
One question per post, each checked against Tesla's own pages. The main questions are on the homepage.
“Referral limit has been reached”: what Tesla's page is telling you
A capped code still opens Tesla's page — it just gives you nothing. Here's how to spot it before you order.
Someone at home already owns a Tesla — can you still use a referral code?
Tesla's terms talk about Tesla Accounts, not households. That changes the answer.
Booking a Tesla demo drive through a referral link: who gets what
A referred demo drive can earn the owner something. It doesn't, by itself, give you a buyer benefit.