If you are having guests over on Christmas eve, make sure you pets are comfortably secured in another part of the house, especially if the front door is going to keep opening and closing. Make sure they have food and water, that cats have a litter box and be sure to take your dog for a walk and a potty break before hand too.
Dogs and cats with allergies may suffer more nasal issues from perfumed rooms sprays. They can affect human household members too.