YASID from reddit

From:
  https://www.reddit.com/r/printSF/comments/1ermpbk/book_i_started_didnt_finish_and_have_forgotten/
"Book I started, didn't finish, and have forgotten the name of."
"I'm trying to find the name of a book that I started a few years back, but for reasons I can't remember didn't finish. Been googling intermittently for a few days and haven't been able to dredge it up.
Thinks I remember for sure.
It takes place in space, I think the POV is a captain of a ship or something similar.
There is a big diplomatic summit taking place at some space station with many different races. The MC is either attending as, or transporting humanity's diplomat. I think it was the latter.
FTL is not capable of making the jump in one go and so they do a series of hops to get the the summit.
There's an asteroid field near by. I think the MC races someone else through it for some reason.
Things that may be a plot point, or I may have come from some other story and are jumbled up in my memory.
While there are some proper alien looking aliens, the majority of races look extremely humanlike for reasons I don't recall being explained by the time I stopped.
Humans have some fancy missiles? Possibly used after the asteroid field sequence?
Any help is appreciated."
Sounds vaguely familiar.  Maybe "Grand Central Arena" by Ryk E. Spoor:
    https://www.amazon.com/Grand-Central-Arena-Ryk-Spoor/dp/1439133557/
"It Was Supposed to be a Routine Test of a New Ship—but They Landed in a Alien Arena Where the Stakes Were Life or Death."
Lynn