First, let me say that I have no axe to grind one way or another in this dispute, but ...
If all 1500 who voted to strike are all flying on that day then VS does not operate.
that is a very large assumption indeed, that all those who vote for strike will actually strike.
In the next couple of weeks, a large an concentrated campaign will be launched by VS management directed at each individual cabin crew member pointing out what the implications are of the proposed actions. What may and may not happen re jobs etc. They will also point out that crew who want to come to work will be able to park at xyz place, away from normal crew car parking and that there will be no picket presence allowed there and furthermore that crews will be escorted into report in blacked out buses etc, ie their anonymity will be preserved from Unite.
If it gets to a strike, then I would expect a hard core militant picket group numbering less than 100, and a very large sickie being thrown by the majority, and some (but not many) reporting for work.
The strike will probably disintegrate within a couple of days as people drift back to work as they see aircraft departing.
The timing of the action could not be much better for VS - January is traditionally a low yield month and Q3 at most airlines is often the weakest.
Following on from that, the end of January will see all those credit card bills coming home to roost and it will probably be 5 1/2 weeks since the previous pay check (and with reduced allowances in hand dut to the strike).
BALPA puts out advance guidance for families and potential strikers to have about 3 months of expenses put aside to cover any dispute - have Unite given any advice to their lower-paid members who can less afford to see a drop in income?
Having seen various actions such as this before, I wish you all well - I believe you'll need it.