Q: Is it polite to wait until everyone has finished eating before leaving the table? (e.g., is it impolite to leave someone alone eating at the table?)
A: Sometimes a person needs to leave the table briefly for a visit to the restroom, etc. In those cases, it is appropriate to say “Excuse me” and leave the table, and then return. If a person finishes eating, it’s thoughtful to remain seated at the table and keep the conversation going until everyone has completed the meal.