Damn the Okinawan (Ryuukyuuan?) dialect. I’m just a loner from the northeast, how am I supposed to be able to make a billion different accents and ways to say the word “very”? At least they don’t all speak in full accents or the little girls wouldn’t be able to understand (just look at Pripara and their meta-jokes). Yeah, so “mensore” means “welcome”, and there are a couple other words too. Just look to the Ancient Hawaiians for the answers to all your doubts, and enjoy the episode.
PS: Where do Johnny and Orihime get all this time to fool around?