The practical answer is to put the oval table away, or push it to the side and use it for drinks etc.
Then get some collapsable tables and use those instead. Covered in cloths and seasonal bits and bobs you won't notice the difference.
Costco do large sturdy foldable tables for about £39. Two of those end to end should sit 10 to 12.
Either that or put a small table off the straight age of your oval table making a T shape; but you need a square room to do that.