One of the things about the South Street Sea Chantey get togethers is that it is a semi-social situation. Professionals and virgins try their stuff out. some pros bring sheets with them to help them over their first few performances of material before they really go public.

Sometimes the pieces get critiqued and emended on the spot. While this is qualitatively different from RUS, the same thing occurs to users of RUS in that people who use this also get corrected on some of the most egregious errors in the book.

As long as you remember that nothing is really cast in stone and authoritative, it's all a learning process.