Approximately 820 Players Remaining
There are five levels scheduled to be played, but with 621 players finishing in the money, the staff can't allow the field to drop too low. The money bubble must not be reached until the entire field is playing together on Day Three, or chaos would ensue.
And however many levels are played today *must* be played on Day 2b tomorrow. So if they play five levels today, they must play five levels tomorrow. If they stop after four levels today, they must play four levels (and only four levels) tomorrow.