Can I Request that the Other Parent not Allow the child to ride with a Grandparent who Has Physical Limitations or a Significant other of my Ex-Spouse who Has Drinking or Drug Issues.

 That is certainly something that you can request of the Court.  You can have this as part of a Court Order or Stipulation and it would be a violation of a Court Order.  If it is either agreed or if the Judge orders it in a Hearing.

Should I bring Teenage Child to Court with me to Answer the Judge’s Questions?

The answer is no. Typically, in nearly all circumstances the Court will not allow the child in the court room.  A better practice would be to ask the Court for either an ARC Attorney or a Guardian ad Litem or even to speak to a Probation Officer, but the Court in only extreme circumstances will want to hear directly from the child because of the impact it might have on the matter.  If you are seeking the child to give information to the Court, you should make sure you ask the court a head of time not just bring the child into the court room.

Do I have Legal Right to know where the other parent resides if my child visits?

Yes.  You should know where the children are.  There are certain circumstances where that would not be the case; particularly, if the address is impounded and there is a restraining order or something similar to that, but other than that, it usually just shows that the other party is being uncooperative, and you can seek either a Modification if it is not directly addressed in an Agreement or an Order; or you could even file a Contempt that is specifically addressed.

What Happens if the Parent that has Physical Custody and is not taking Care of the Child?

If they have physical custody you can go forward as soon as possible with a Modification.  Depending upon the level of concern, you can file an Emergency Order or a Temporary Order as well.  At times if you need to you could either contact DCF or have the police do a well check.