Its always best to give the money to those people who are recording it down vs. family member because they might forget to hand it in later or have it record.
Funeral foods preparation it can be the same rather Christian or not because it really depend on the family expenses and what they want. I've only been to one Christian funeral so far about a month ago and I have to all the foods there at my grandmother's brother funeral was good. Some cooked, some take out order from Chinese restaurant, etc. Some traditional funeral they mainly just have cow cooked and barely anything else. At my fil's funeral we had all kind of food but nothing too big but just plan that today will be kapoon or fawn served along with the regular dish of cow, pig, etc. but nothing too much. Snack, coffee, etc. is there to grab whenever you need it.
Christian funeral most work are handle by member of their church or other church that are related to the person too. Traditional is mainly handle by sil, aunt, etc. relatives of the decreased person.