1st timer - great run, great organisers.
Only two small comments:
1. The bottleneck in front of McLaren was annoying as the track was so narrow, but could easily be sorted by the start being reversed i e. away from McLaren (as I think it might have been last year?).
2. Although the idea of no plastic bottles at the water stations is admirable, the paper cups were just too small, and you had to stop to make sure your cup went in the only bin. Perhaps a few more bins past the station?