If Minfilia is scared of Emet, Riz is more than happy to share how he A, made Emet jump inside of Cornblob's asshole, and B, pranked Emet with corn. And hey, if she wants to bitch about the dude, Riz is so there for that.

(but also, if she is giving some pointers on camping, Riz might be interested in those. He might be from DnD, but he's from a modern city and the one time they went on a quest, they had a van. So, uh. He is out of his element now that he is among the elements)