Can be friends of members,
I know people who are buying hammers memberships now to get tickets for the Frankfurt game before general sale ..
Who's to say they aren't members who pay for a yearly membership? I used to have one £40 a year and prioty booking for cup games etc
I think you're underestimating the fan base size of Liverpool.if you're thinking that West ham's is even remotely comparable.
I would be amazed if any liverpool fan at Wembley today was at their first game of the season.
They have lots of glory hunting fans I'm sure. But those are at home.