It seems like the ID agreements in myidtravel are differnt from company to company. For SK no travelpartner on icelandic or airomexica and no nonrev atall on any canadian, but jetblue is ok for travelpartner - one of the very few.
After so many years of travelling nonrev we are not good at making plans in advance - and we would still have to nonrev CPH - NYC.
At the monent I think we might go 2 first weeks of Dec. or 2 weeks end af Jan. and then have a plan A: LIR, plan B: CUN and maybe plan C Dominican Republic. We normally do not book hotels in advance, so we can be very flexible, that is positive with myidtravel, that it is very easy to change plans.
Thank you for your help, hopefully jetblue opens up a new world for us as a family.
Will let you know the outcome