Thank you guys.
We found a seat on the same plane my sister is taking home tomorrow for my Mom. She can't be left alone and it is too hard for my Dad to keep her occupied in the hospital.
My Dad will need gallbladder surgery, but it should be able to wait until he gets back to NY. His bilirubin are up. He needs those down before he can be released. We are hoping for Monday or Tuesday. And then he will fly to NY.
The truck and boat will be stored at BIL's house until they can come back and finish their trip.
Thank you all for the support so far. Still need more Pixie Dust to get him home for Christmas.