Oh, so many things to say about the Playa del Carmen episode.
When the son-in-law said that he and his wife came up with the idea of buying a vacation home and therefore should get the master bedroom, I turned to Mr. RS and said, "He isn't a very good actor--can't even deliver the line fed to him decently."
More power to couples who can vacation with their in-laws. And even more power to those who BUY a vacation with their in-laws. (That tells you how much I do things with my in-laws.)
Even though they say the costs are split 50-50, somehow I still think that the parents are paying for more than half the condo.
When people buy an overseas vacation home, do they really treat it as a second home? Unlike, say, a lakeside cabin that you can easily drive to, it seems to me that you can't realistically (moneywise or vacation-time-wise) fly down there more than 3 times a year. If that's the case, do you treat it more as a pied-a-terre or a hotel room? That's why the discussion about the master bedroom seems silly to me. If the 2 couples really synchronize their vacation schedules so all 4 stay in the condo at the same time multiple times a year, then yeah it matters; otherwise, what's the big deal? But if I visit the place at most 3 times a year, to me it's still just a hotel room rather than a second home.