I rushed home to soak and block the vest, then I trained our trusty Vornado on the garment and let it dry. This morning, I paired it two shirts to see how each looked with the vest. Here it is with a white Oxford shirt:
And here it is with a Wedgewood blue shirt:
The fit is good and blocking it found the vest growing longer by about 2 inches. All I have to do tonight (or Thursday night) is some single crochet around the neckline and the armholes.
I do believe I'm ready for Rhinebeck and with time to spare!