The atmosphere in and around pubs and clubs in the town is very entertaining, and made Tarifa famous far beyond the spanish mainland.
Usually, people arrive with a desire to have fun and to get to know new people.
The majority of people who live in Tarifa (nationals and internationals), are people without prejudices, who will welcome you amicably.
Tarifa is big enough, not to have to see the people you don't want to, but small enough, that you will find always the one you would like to see. :-)
Therefore, if you decide to spend some days here by yourself, with your family, your friends or your partner, you will always get to know people who will make you feel comfortable and have a (very) good time.