Much of the comment on here seems to me to be in an Amercian context. Looking at it from a purely Scottish context and very much my own personal opinion, I don't think par 72, 7000 yards is "required" at all. In Scotland most private member clubs are relatively accessible, even the biggies, and therefore more or less compete with the few pay and play facilities for visitors. In that sense, they are marketed and for most clubs visitor revenue is an important component of their income.
While they all have websites that will tell you par and yardages, more important in any selection is established rep, type of course ie. links, parkland etc, cost and availability ie. travel distance and any restrictions on play. In terms of reputation they might be known as long or short or indeed tough, easy, featureless, hilly, fun, holiday golf, quirky etc. but they won't be "known" as a par 72 even if it is stated on the website.
To the ordinary golfer I really don't think the actual par and yardage register that much. The reason for that is probably historical in that with so many old courses with varying yardages and pars, the standard 72 and 7000 isn't as established as perhaps it is elsewhere, but also I think when you have such varying playing conditions between types of courses, and the weather on any given day, they can be pretty meaningless stats. For example play Troon on a relatively benign day when the course is running and you might think it a breeze while you play Kilspindie when its relatively soft under foot and the wind is blowing you off your feet and you might think it a brute.
Niall