I suspect that's how some places are doing the count most(all?) of the official/promotional footage from Morongo I saw showed alternating machines being locked or off while phone footage shows, at least on some banks, every machine on and being used. Thewre are too many entrances and exits to keep an accurate count, only letting in one person when someone else leaves. In the old days when you walked through a casino, how many empty, unopened tables, closed pits, and vacant slot machines did you see? Sure, a busy casino was crowded, with people wandering around, and on a Saturday night business was brisk.
Plus, I wonder if '25% capacity' means one-quarter of every available seat.