You are correct in relation to cymbidiums Shane and lack of availability.
As for the Orchid Fair, that all depends on Brexit. And we all know what a mess that is at the moment.
We will just have to wait and see what happens because if the UK leave without a deal then CITES will be enforced for the import and export of all plants. Each species or hybrid would need a CITES permit and these are very expensive and take time to be supplied.
We will know more by the 29th March deadline