First timers:
Name: Definitely have your name on whatever top you're wearing. The crowd will give you massive support which really helps push you along especially in the closing stages, but having people shout out your name makes all the difference! I'm having 'Stevie C' on the front of my vest and 'Lombster' on the back. I'll also be wearing a wig to go with my charity vest which also adds to the cheers on the day!
Long runs: For those of you worrying about training, this will be my 8th marathon and I haven't got it right yet! Don't underestimate the importance of the long runs as that has been my downfall in the past. The marathon is in two halves, the first 20 miles, and the last 10km! It's the 18-22 mile long runs that will get you through the last 10km. To give you some perspective I ran my first marathon off the back of only one long run (around 18 miles; that was also the only run I did over half marathon distance!) and I paid the price after around 15 miles when my pace dropped off a cliff!
Finish time: Unless your training is going extremely well and you have a fair (realistic) estimate of your finish time I would suggest just aiming to complete the marathon as your goal. Again to give you some perspective, I was adamant I could finish my first marathon in sub-4 given I was a consistent 9 minute miler. I ran through the first half in slightly under 2 hours (all good there) but then as I passed through 15 miles (see long runs!) my pace slowed. That coupled with the fact I knew I was going to miss out on a sub-4 finish really didn't help the situation!