I have recently acquired a tandem, and become a member of the Tandem Club. I decided to join in order to maximise the amount of pleasure we could get from the bike.
Today we went on our first ride with the Suffolk Section of the club, and what an enjoyable experience it turned out to be. Everyone took pains to welcome me and my young son, involving him in conversations, and looking after us. It was very clear that members enjoyed the social aspect of the club.
If you think that the Tandem Club may be for you, then I would highly recommend giving it a try.