I have been doing a ton of research into this since my flights are Apr 25 and May 2. We booked through Travelocity with non-refundable. If Delta strikes but does not go out of business, Travelocity says we will get our money back and they will negotiate with the hotel to get our money back. We are at Holiday Inn Sunspree. I called and confirmed this with their manager. She said it would depend on what time of day they got the cancellation-if late in the day, we'd be charged for one night.
The law says that other airlines have to take you on standby if they have space for no more than $50/person/flight. Keep in mind that this law has never been fully tested and that Delta flies over 300,000 people per day. All of those people will be scrambling for flights, too. There may not be many available seats on standby. The websites I've found said that you need paper tickets if you plan to do this. If you've got e-tix, I would look into converting them (not free or cheap)
If Delta strikes, it's likely that its creditors will call in the debts putting Delta into full bankruptcy. If that happens, we'll all have trouble getting our money back because Delta has to pay off its major creditors long before the ticket holders. If you booked with a credit card through an agent you can probably try to charge back the agent but they may have fine print to cover their behinds. You only have 60 days after the item appears on your cc statement to charge back.
Finally, I have a friend who was a flight attendant and whose dh is a (not Delta) pilot. She sent me this:
'Voting for a strike doesn't mean they will actually strike. I'll ask DH to refresh my memory on the exact procedures but there is a very strict order of things that must be done before a strike can actually happen. The laws covering airline contracts are very different from most industries. The union membership voting to strike is actually one of the first steps and doesn't mean all that much. The intent is to let the company know that the union negotiators have the backing of the entire membership. They want to the company to "get real" in their negotiating. There are a lot of things that have to happen or can happen between a vote and an actual strike. I've seen a LOT of votes to strike and very few actual strikes. I really hope it doesn't come to that! I know how much you are looking forward to this vacation and I hope you will be able to take it with no more hassle."
The pilot's union rep is asking to be allowed to set the strike date. If they strike, we will drive. It will stink but we'll only lose one day. Good luck to all of us with Delta tix. Lots of anti-strike vibes!