My fiance's brother and sister in law have an 8 month old baby, their 3 year old will be at the children's table but do I have to have the baby at the top table with us? I don't want it to turn into a creche and have her in a high chair with us? Would it be rude to ask my sister in law to be to give her to an Aunt to look after during dinner?

6 Laura, London