The preferred way to address a couple is to spell out the word 'and' rather than using the ampersand. This might not apply rigidly if you are dealing with a fairly informal letter.
Yes that is correct.
It depends on the "Mrs." you are addressing. I could be either Madam or another variety of "Mrs."
If you're addressing it to both of them - It would be: Mr & Doctor Smith OR Mr & Mrs Smith - depending on how well you know them.
When you are addressing a letter to married doctors it would be: Drs. John and Jane Doe.
You may write Cpl. & Mrs.
It can be but Mr. and Mrs. Jones or Mr. and Mrs Carl Jones are equally acceptable.
When addressing an envelope to the wife of a doctor who is not a doctor herself then and he is Dr. John Doe, then address the envelope to her as Mrs. John Doe or Ms. (Mrs.) Jane Doe.
A formal greeting would include a title such as Mr. or Mrs. an informal would be addressing them by first name or nickname, i.e Dear Susie instead of Dear Mrs. Smith.
In correspondence, addressing a married couple is : " Mr and Mrs John Smith " - the first name of the husband is the only one used. It is incorrect to address a letter to a married woman as " Mrs. Mary Smith. " A married woman traditionally takes the name of her husband and so a letter to her would properly read, " Mrs. John Smith." Surreyfan
Addressing letter for a husband and wife team:Mr. & Mrs. John DoeDrs. John and Jane DoePastors John and Jane DoeManagers, John and Jane Doe
The correct title is: Mrs. Jane Doe & Miss Kate Doe.
When addressing an envelope to a husband and wife it should be: Mr. & Mrs. John Doe. If either of the partners are a doctor, etc., then it would read Dr. & Mrs. John Doe or Pastor & Mrs. John Doe, etc.