Get used to the smell of posset which will be deposited on your clothing and will never come out.
Do not get drawn into saying who you think the child resembles ~ even if it is Winston Churchill
Be prepared for LL to be furious with you for no apparent reason. Grandmothers get that way ~ accept it.
Oh AND .....
Miss Piggy knows she has dark circles under her eyes, that she will never fit into those tight jeans again, that she looks generally shite, that she has baby sick in her hair, she smells of puke and she has damp patches on the front of her jumper/blouse where her tits are leaking ~ she will not be grateful to you for pointing any of this out to her.