Visitors' passes are for one-offs
My experience with visitor's passes is that I have come in with a friend but needed to be a member, so got a one-day pass,or I could buy passes but was limited to about four a year. And I had restrictions. One is that I had to pay full-price at the bar. So 'sensible clubs' don't offer membership benefits to non-members. That would make them not a members-club but something else.
And I was not the owner of another club, so could not offer reciprocal goodies. That argument suggests that the EU and the UK could set up an agreement for mutual benefit, which would be a trade agreement. Which is what May was trying to do. But the no-deal Brexiters seem not even to want that.