Will I read it soon? Eh, probably not. If someone gave it to me for my birthday, I would thank them and put it on the pile for eventually, behind, say, The Reverse of the Medal and Last Tango in Aberystwyth.
Do I care if you enthuse about it? No. Enthuse away.
Do I care if you anti-enthuse about it? Not really, but unless you've read it or want to say specific things about other YA authors and/or earlier volumes (or are really clever, and really, when are you lot not clever?), I'd rather read about something you like than something you don't like or (more appropriately, I hope, in this case) don't much care about. It's generally more interesting to me.
Sort of along this topic, you often hear of parents giving away boxes of priceless baseball cards. Do you still have the books you loved most in childhood? Did you ever own them, or were they mostly library books? Is there anything missing that you would really like to have again?
I could swear I'm missing a mixed box of childhood books containing Arthur Ransome's Peter Duck and Madeleine L'Engle's The Arm of the Starfish, among others. I've given up and replaced Starfish (which is, by the way, one deeply weird-assed book) and have Peter Duck on my Amazon list. But mostly I'm looking for the ones I got from the library: the Bagthorpe books, some but not all of E. Nesbit, that sort of thing.