My experience has been that Mormons are very friendly and associate freely with non-Mormons. I knew of many Mormons in the Navy where they tend to gravitate to the highly technical ratings/specialties or are commissioned officers with college education. Military service to the Mormons is quite acceptable as are government jobs/positions including politics without limitation.
I knew several x-Jws in the Navy and they, by comparison, were quite screwed up on account of the Cult Mind Control conditioning. They were all of the opinion that they'd made the wrong choice in trying to escape the Cult through Naval Service and were looking for a way out of the Navy to return to the Cult. Most of them tried to associate with witness Congregations whenever we were in a port that had any. They seemed to be welcomed to the activities and weren't shunned by the witnesses abroad.
I knew of none (x-Jws that is) who, like myself, were pleased to be out of the Cult and intending to make the Navy a career. Of course I didn't advertise the fact that I was an xJw since I really had no plans to ever rejoin the Cult.
While I was attending language school in Arlington, Virginia and living in Falls Church, Virginia, we were neighbors with a Mormon family and we became very close. My wife and I agreed to their familiarization presentation in our home (sort of a recruiting effort) but there was never any pressure exerted upon us to join them. We were close friends the entire time I was stationed there.
The Mormons do not consume alcohol or caffeinated beverages and make great effort to eat natural and nutritious foods. I was truly impressed with their cleanliness and their very healthy appearances.