Guest
Visitor
noun
A VIP comes to your door. They're your guest! I hope you aren't going to make them sleep in the couch.
らいひん
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
来賓の方々をはじめ、皆様にはお忙しい中、ご臨席を賜り誠にありがとうございます。
We’d like to thank everyone, including the guests, for honoring us with your presence while you’re all busy.