After much chasing about my booked and confirmed tickets RYR have finally agreed that all flights from VLC are cancelled for 6 weeks Nov-Dec and tell me I will get a refund.
There is nothing on their web site about this.
Would I have been offered a refund had I not been able to tell "customer services" exactly what was happening with these routes? Probably, but I suspect very much nearer the date when finding an alternative may prove difficult. My impression was that they wanted me to accept a flight to a substitute airport, a refund was the last option offered.
Being a member of PPRuNe obviously has it's advantages.......