Event metering on Zoom Sessions Pay-Per-Attendee plans

The FAQ on this subject doesn't answer how Zoom handles attendees: https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0063714

The FAQ states: "Each attendant that exceeds the prepaid number of allotted seats will incur an overage fee of $2.50 USD per attendee" then later it states "If the license attendance rate is exceeded, no further unique attendees will be able to join the event." 

What happens if we buy the 100 pay-per-attendee plan and 150 people show up? We are ok with paying 50 x $2.50, but we are NOT ok if the 101st attendee is blocked from entering.