I agree that there seems to be some who do not wholeheartedly get stuck in & those who have no problems in adapting.
In my experience of many years in overseas postings the same attitudes appeared, in that some became true ex-pats & some did not embrace the concept of being away from home/their mum/brother/football club etc.
Living aboard is another life experience & should not be treated as just a change of venue with a party lifestyle.
I’m off on Monday to the med. to join the permanent ranks after many years of two & three week cruising, so I will let you know in a year’s time what happened.