Old school etiquette* says it is taboo unless it’s required by the venue for entry, similar to Black/White Tie for the Oscars, and some older generations will be offended. What are your thoughts as a guest? Would you appreciate this information or is it overstepping?
* Etiquette being the unwavering navigation system for social situations without offending or confusing anyone as long as humans interact with each other as opposed to tradition which can be tossed out at will if it doesn’t work for you