My husband has very limited mobility, he is under doctors order to not walk/stand longer than 20 minutes. He normally uses an electric chair when we grocery shop, but we do not have a chair for him for other purposes as since his injury we have not had a reason to get one we have just accommodated our life style. His doctor has agreed to write a letter for DL (don't know if one is needed?) that explains his limited mobility so he can use a wheelchair (which we'll probably purchase). I have never been to DL with someone who is disabled. What should I know? Will the wait times be longer/shorter or the same? Any advice or tips would be great.