See if there's a forum for the event on RW and find out what people think of the race and the organisation. Find out about the course route (hills or not?), the organisation - parking - how near, changing, toilets, drinks, post-race stuff. And get some supporters in to at least be at the finish for you even if they can't be there the whole time, very important to have someone there at the end. Use the forum to ask questions of people who have done it before and maybe even find some that will be going your pace and agree to meet up at the start. Always nice to have someone to talk to at the event, even if you only know their forum name. Anyway, have fun. Unless it is a really fast event for whippets, you won't be last!