Perhaps they are the arty type.
Salvador Dali was an eccentric although he always seemed well dressed.
I would have to ask these guests if they had lost their luggage.
I know that I look much better in a hand made suit or tux than I do trying to look casual.
Most men are not good at casual attire and tend to look scruffy.
It is difficult but us men look our best when we scrub up.
Ex staff that have jumped ship and thought the grass was greener will find negativity in an old job when starting out in a new job.
It's human nature.
We wish them well,God speed and bon voyage.