I had a lot of fun with this module, the setting just oozes out of it from the very beginning. Beyond having a great story (and sort of a personal quest for a long running NPC the party might have dealt with quite a lot), there's just a lot of good stuff here. My favorite bit is the Emerald Enclave secret mission - its a hillarious oppertunity to roleplay a treant with delusions of grandure. The only downside is how long it runs - possibly with practice I could make it faster, but this way overran our schedule and we didn't even have a harper in the party (and therefor skipped an entire section).
If you want to run this and do it justice, plan a long session or plan to play it over a few sessions. Its definitely worth it.
[5 of 5 Stars!]