I was in San Diego most of the early 50s. Never went to National City tho it was close. The sailors and marines usually had their favorite bars. What I mean is that the sailors from a particular ship or station hung out at a certain bar depending on the type of music at the place. Sometimes there were fights among the sailors because this was their bar. As for the women who worked in the bars. You had your good and bad. Seems like most of them were always from other states. Seems like the ones who waited talbles were okay and hard workers. Some were married who needed the extra money while their husbands were deployed overseas for months. Then there were the barflies that were there to hustle drinks. They would have you buy them drinks and theirs were watered down. I suppose they got a commision for the number of drinks she hustle. Then their were the ones whose husbands were overseas and they were lonely and just wanted to dance or talk. You have to remember military pay was low and the majority of the men were under 21. Hope this makes sense.