I need help planning the Christmas Day menu for my family which consists of:

A pescetarian
A carnivore who doesn't eat seafood
2 people on the Ideal Protein diet (high protein, no carb)

Please help! I'm definitely going to do a big salad but I'm lost otherwise. I'm probably going to need 2 main dishes, one veg/fish the other meat. Nothing too complicated as I don't want to be in the kitchen all day. Thanks in advance.