Come Over And See Our Vacation Pictures
You never want that sort of invitation unless, exceptionally, it's your nudist friends hosting a cook-out and photo tour of their latest vacation to Orient Beach or Hedonism II. If that's the case, just ask what you can bring (well, I guess that depends on what shape your friends are in).
Couples nudist and/or topless holiday photography tends to be more intimate. There's the first day on the beach (tan lines) and then subsequent profligacy as couples get more cozy and, in some cases, erotic with their poses. Then of course the panoramic views of fellow nudists and, God forbid shots of cute towel animals fashioned by their chamber maids (in ubiquitous trip reports everywhere).
And let's not forget couples enjoying nudist camping, or groups white-water rafting in between bouts of group nudity and heavy drinking. Categorically, people on vacations where nudity is involve tend to do interesting things.
TomH-ED "Nudist Vacation Photography"