As you say, it's easy to establish rules to thwart abuse. So why charge guests so much? One of my clubs charges close to 40 quid and the other £10. I don't see why there is such a difference. In any case, my point is that I am surprised clubs target member guests as a revenue source.
Ciao
All a tradeoff.
A club needs a certain amount to operate, and it will either be via member dues or additional revenue gained elsewhere.
Some clubs may end up with more traffic than desireable with low guest fees and therefore the members subsidize their guests play with higher dues, or the costs are born by the members who bring more guests paying higher fees.
So it depends on the desires of the memberships, and unfortunately, often depends on the patterns of those making policy.
Put another way, a course full of multiple guest-one member groups is more likely to move slower(or at least be blamed) than a course full (or less so) of member dominated groups.
All a tradeoff, but I'd like to think that a course full of guests moving more slowly due to volume or unfamiliarity, was at least keeping my dues down.
But, it depends of course on demand and your own personal usage of a club.
Balance as there is merit to both camps.
I prefer personally the UK/Irish model of accompanied guests paying quite a low fee and making up the revenue via visitor fees.
The US, until recently, seems to put the burden on accompanied guests and eschews unaccompanied groups.
Meanwhile, ON Topic
What makes it cheerful
A design with interest, no frills maintenance where unirrigated and /or even patchy fairways are acceptable, where most of the budget goes to greens maintenance presented simply, with perhaps even infrequent every other day mowing.
Tiny clubhouse with minimal staff-no lockerroom or outside staff, generally a one man(at a time) operation where golf is the only focus.Zero effort to prove anything or one up the club down the street-just good golf and no frills.
So many clubs in the UK and Ireland come to mind.