You can't ask them ahead of time, because it would be the same thing as asking them if they have a disability.I suggest reading up on the emotional support dog laws. 

I recognize these are highly charged and emotional moments.

Just depends on how attached he is emotionally to NJ.

Well, this has been sort of an emotional roller coaster given we need to sell the place within a time limit given our financial and health situation (plus wanting to put an offer on the home we want before it sells).

I used Trident about 10 years ago and mixed emotions.

@Nathan Frost I am reading a whole-lot of emotion here, and very little in logic and data. 

Time and emotional energy are some of your most valuable resources.

I wonder if they really are service dogs (which are usually well trained) or pets with papers (aka emotional support animals).

Keep emotions out of it, Its business.

You are not Atlas and the emotional strain it will bring could ruin your life.