A Welcome, Welcome
noun, verbal noun, の adjective
It is a delight that you come so I welcome you. This delight welcome is a welcome.
かんげい
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
カウンターの上に「チップ大歓迎」と書かれた箱がありましたよ。
I saw a box on the counter that had "tips welcome" written on it.