Short answer
You will typically need around ten tables of ten, or a mix of smaller and larger tables, depending on your room shape and whether you include children. The exact number depends on your table sizes and guest numbers.
Start by deciding how many people each table will hold. A round table of ten is the most common choice in the UK, so 100 guests would need ten tables. If you prefer smaller groups, you could use five tables of ten and five tables of eight, which gives you more flexibility.
Remember to count everyone, including children, the bridal party and any extra family members who arrive. If you have a mix of ages, consider a few smaller tables for families with young children so they can leave early without disturbing the room.
Think about the room shape too. A long rectangular room may suit rows of smaller tables, while a square room works well with round tables. Leave enough space for the dance floor, the buffet and the cake table.
Sketch a rough plan on paper before you book tables. It helps to see if your chosen tables fit comfortably and if guests can move around without crowding.
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