Up-grade question

I'm flying to MCO on 25th June on VS071, we've booked with VH and are travelling PE both ways. There is three adults and 2 kids travelling. I've done a load check and the situation is as follows :-
J9 D9 R9 Z9 S9 Y1 B1 L1 M0 Q0 X0 N0 O0
My question is, what are the chances of our party being up-graded to UC? And is there any particular way of enhancing these chances? None of us have any miles with VS, I'm a regular flyer with CO.
I just wondered how they go about filling the UC cabin if it's not booked.
J9 D9 R9 Z9 S9 Y1 B1 L1 M0 Q0 X0 N0 O0
My question is, what are the chances of our party being up-graded to UC? And is there any particular way of enhancing these chances? None of us have any miles with VS, I'm a regular flyer with CO.
I just wondered how they go about filling the UC cabin if it's not booked.