First IUI

I am going to have my first <a href="https://glowing.com/glow-fertility-program">IUI</a> later this week  and have a few questions for anyone who has gone through it. 
First how long prior did you abstain from sex?  I know sperm are optimal when you wait 2-3 days. 
Second did your significant other come with you when they actually did the <a href="https://glowing.com/glow-fertility-program">IUI</a>?