My family is having our usual Christmas Eve gala. There will be 20 of us and the theme is seafood. I am looking for ideas on what to bring. I want something that can be mostly prepared ahead as I will be bring this to my uncle's house and the kichen burners and oven will be very crowded. I was thinking of a seafood paella but can this be made in advance? No cream or dairy please, we have several allergies and intolerances. Thank you in advance for your input.