Mistake 1: treating Alphabetical Seating Board as a late layer
The format loses its advantage when letters are imbalanced, surname rules are unclear, or the visual grouping makes guests search twice. Teams often wait until the decorative or final-minute phase to solve a problem that is actually structural.
Mistake 2: splitting revisions from the live plan
The naming convention has to be frozen early enough that sorting, print proofing, and on-site setup all use the same alphabet rule. Once that link breaks, accuracy drops fast and staff start improvising.
Mistake 3: finishing without a setup-ready version
A beautiful artifact is not enough if the venue team still has to guess where it goes, how it is read, or which version is final. The final board should make the sorting rule obvious, especially for prefixes, compound surnames, and language-specific characters.