Believe it or not, I was unfamiliar with the Forgotten Realms when I picked up this book. And yet it's still the best standalone novel I've read from this setting.
The overall impression I'm getting from these reviews is that readers wanted epic developments, stunning revelations, and outright heroic characters. Naturally, if you're going to limit your tastes to that form of fantasy, you're going to think this book is boring and terrible.
Fundamentally, this is a book about the characters - every one of them flawed, but none flawed to the core. Druhallen is stubborn and nomadic, but fiercely intelligent and a seeker of wisdom. Roz'ta has strong maternal instincts and a fierce temper, coupled with pragmatism and a strong bond with her compatriots. Tiep is immature, irritable and even cowardly, but he silently values and cares about his adoptive family.
People thought Sheemzher was a rip-off of Gollum. I would remind these readers that goblins are not known for their mastery of Common, and that Sheemzher has a good number of traits that distinguish him from Gollum - outright loyalty and good, as well as a childlike nature.
I found this change of pace from the usual save-the-multiverse fare extremely refreshing. This is the story of a group of unambitious adventurers just trying to make a living in an often unfair world. Boring to some; very fulfilling for me. And this from someone who doesn't even enjoy most Forgotten Realms literature.
I highly recommend this book. Just know what's on offer here and what you like from fantasy before you read it.