Thanks everyone for the comments - reassuring to know that others go on their own and that they don't feel silly doing so. Also good to know that people often strike up conversation with people at talks and in queues. As it's my first convention (at least for a very long time) I just needed some friendly reassurance which you all very kindly provided - thanks! :-) You've given me the push I needed to buy a ticket - now got to decide which package to buy! Maybe see some of you there - be good to meet some fellow trek fans as, like Jamesmd85, I don't have any friends who are also fans.