Aha! Well, Preuss is definitely an improvement on Wikipedia as a source, even if not a primary documentary source. Thanks for sharing!
ETA: Now that I have an exact date, Rödenbeck reminds me that Ulrike was married by proxy (with AW as the bridgegroom) on July 17, 1744, and Fritz had been in Berlin since July 13 (Potsdam before that).
Re: Keyserlingk, sensational gossip, and Royal Reader request
ETA: Now that I have an exact date, Rödenbeck reminds me that Ulrike was married by proxy (with AW as the bridgegroom) on July 17, 1744, and Fritz had been in Berlin since July 13 (Potsdam before that).