The context and cultural norms play a significant role in determining whether it is considered rude for one person to be seated at a table meant for two. In general, it's not inherently rude for one person to occupy a two-person table, as long as it doesn't inconvenience others or violate any specific rules or etiquette of the establishment.
Here are a few factors to consider:
Availability: If the restaurant or venue is busy, and there are limited seats available, it might be more considerate to sit at a smaller table if you are dining alone. This allows larger tables to be available for parties that genuinely require more seating.
Staff's Guidance: Some restaurants or cafes may have specific rules or preferences about seating arrangements. If the staff asks you to move to a different table or politely suggests that it would be more appropriate for you to sit at a different table, it's best to follow their guidance.
Personal Space: Some individuals might prefer sitting at a larger table when dining alone to have more personal space or room for their belongings. In such cases, it may not be considered rude.
Cultural Norms: In some cultures, there might be specific customs or expectations regarding seating arrangements, especially when dining alone. It's essential to be aware of and respectful of cultural norms when dining in different regions.
Common Sense and Consideration: Ultimately, the key is to be considerate and use common sense. If the restaurant is not crowded, and there are plenty of available tables, it's unlikely to be seen as rude to choose a two-person table when you are alone.
If you are unsure or concerned about the appropriateness of sitting at a particular table when dining alone, you can always ask the staff for their preference or advice. Being polite and considerate of others' needs and the establishment's rules will generally lead to a positive dining experience for everyone involved.