I really really wanted to like this book. As a teenager I adored the Pern books. But although this credits Anne McCaffrey, it's obvious that her son Todd has done most of the writing. Surely the reason we want Pern books is because we want to read about the wonderful dragons and their riders. Instead what we have here is a long novel going into boring details about day to day life in the sky weyr. The dragons have very little characterisation and end up being little more than transport vehicles.
If you want to read excellent Pern fiction, go to the three novels called 'Dragonchoice' here: http://www.dragonchoice.com/
You'll get believable characters and dragons who have personalities!