I'm working on compiling my invitation addresses and I have a question. My sister's 10-year-old son goes by his middle name (i.e. his name is John Michael Smith and he goes by Mike). I'm having a formal wedding (not black tie) so I really want to use the correct wording so that the guests have an idea that it's a more formal event. Which should I use?
Mr. and Mrs. Smith and John
Mr. and Mrs. Smith and J. Michael
Mr. and Mrs. Smith and Michael