Fairy Bad Day is one of those books that can be described as "cute". I liked it a lot, and I definitely want to read Zombie Queen of Newbury High, but it didn't make my list of favorites.
It was long but captivating. And although killer-fairies are quite unpleasant, the tiny mall-rat fairies are (dare-I-say) adorable and hilarious! I loved them!
Also I figured out Curtis's secrets way before he told Emma ~ and that's all I'll say about Curtis's secret. No spoilers here. :P
I think I was in love with the book up until the very end. The ending is what really didn't cut it for me. Either way, it's still a good read. :)