If the wedding reception is held in a hotel, usually each table can accommodate 10 people. However, in some cases, people may bring their families and children to the wedding, resulting in insufficient seats. So you can communicate with the hotel and put some spare stools in case of special circumstances and avoid embarrassment at home.
In addition, if it is a wedding banquet with a seat card, you need to prepare spare chairs in advance, and at least two or three more tables can be arranged at the wedding banquet. If the guest does not have a seat card when he arrives, you can temporarily write the guest's name on the empty card.
The above information is for reference only. It is suggested to negotiate with the hotel according to the actual situation and choose the most suitable arrangement.