We moved from California to Iowa last September, so at least we didn't get the worst of the summer heat. Before we left, we got the AC fixed and charged so it worked well and Frank stayed cool even in the back. We also have a cool collar for him too. We just stayed in dog friendly hotels and never left him, but we didn't have any other obligations on our move. It looks like you got good advice from everyone and you will know what is best for Watson. Good luck!