I thought it got bogged down after Sugar Rush too, but I liked the characters and their relationships enough that I was able to look past it. The world itself was fairly lifeless though, to me, and affected my view of the film enough that I gave it a "B" in the end. I loved Sarah Silverman's character actually, because it's a reflection of childhood and inappropriateness that I think resonates. That relationship between the two of them builds enough that when the movie closed I was actually a bit teary eyed.
"Hah! It's like we don't even have feelings. Now pardon me while I recline in my huge executive chair and guffaw, cigar in-hand. "
"ill just go with what Winslow always when something that funny about a location in monkey island is said"