What is the etiquette for a micro wedding guest list?

For a micro wedding, the guest list is about quality, not quantity. Start with the people you cannot imagine marrying without, often parents, siblings, and a few closest friends. It is perfectly acceptable to have no guests at all, or just two witnesses. The key is to be clear and kind with anyone not invited. Tell them personally, not via social media, that you are having a very small ceremony. You might say you are keeping the day intimate, and you look forward to celebrating with them another time. If you want, you can host a separate party later for wider family and friends, but that is optional, not expected. Remember that every guest adds to the cost and complexity, so choose people who will support you fully. It is also fine to have different numbers from each side, as long as you both agree. The etiquette is to be honest, warm, and consistent, so no one feels singled out. If you are having a religious ceremony, your place of worship may have its own rules about who can attend, so check with them early.