I have two options to move from one state to another: take my cats with me on the plane - one cat per person is allowed, 2. Rent an RV and travel for about 4-5 days with the cats - having litter boxes, food and stuff. My holistic vet says that the flight would be much more stressful than the trip in RV. Does anyone have experience like that? I am totally torn and confused and don't know what to do