Trump Classic - 11/23-12/15

[Sandwich]

I will be in Atlantic City on Sunday 12/9 and am thinking about playing the 4:15pm tourney ($300+40 buyin).
It's listed as a "2nd Chance" tourney though... Does that mean I had to have played in another event, or can I buy in directly?

Any educated guesses on how many players will be in that one?