V-Flyer

i was wondering if some one could be kind enough to let me know what the availability in UC is on VS300. my husband and son hold PE seats and was hoping to see what their chances could be of upgrading on the day with miles?

many thanks

According to Flightstats.com it's

J/9 C/9 D/9 I/9 Z/9 W/6 S/6 H/6 K/3 Y/0 B/0 R/0 L/0 U/0 M/0 E/0 Q/0 X/0 N/0 O/0

thank u so much