"Ah, yes! I came over to apologise for not being able to find more tents. I didn't realise that the group would need an individual tent for each member. I apologise. I should have considered that as an option." Cass didn't like how he said that. That felt like a dig of some kind, but Cass wasn't sure exactly how.
Was he making a comment about how greedy they were being? Or was he making a dig at Lady Fiona because she was married to all but one person in the hero party? Yes, that was a rather strange situation, but at the same time, it helped Lady Fiona have a bit more weight to her name in the noble society.
There was a reason the Vespertine family was usually in charge of heroes that were declared by the gods. The nobles, from their actions already, weren't charitable to most heroes who didn't come from noble lineage. Hell, Lord Blackburn came from a noble lineage and that didn't seem to matter when it came to how the others treated him.