Smart money says check your airline reservations once or twice a week. We have often gotten notice of cancellation but we’ve had other occasions where we never got them.
It’s better for you to let the airline cancel you rather than you cancel them. Under those circumstances, the USDOT laws say they must give you a like kind refund when they cancel your flight. It’s been my experience AA and Delta are good about this. JB requires a little more effort and insistence on your part, or at least, that was our most recent experience with them. I have no idea what United is like to deal with.
With reference to the resorts, no clue.
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