It was definitely better than some of the previous Thanksgiving events.
It would have been nice for them to give quirky clues as to where the turkeys were hiding, rather than a simple "There's one in Varrock". The turkeys did have some nice examine text (and they each represented a J Mod), so that was nice.
Overall, I'd rate it as a 9/10, considering that Thanksgiving has never really been a big holiday in RuneScape.