Are there any rules regarding having a guest on a Friday afternoon? Let's say you want to have a friend or family member over for a meal, and Friday is the only day that works, and evening (that is, Shabbat dinner) will not work.
Is it permitted to have a guest at this time (mid-day or afternoon on Friday)? Is it ever permitted to serve dishes that one will also serve for Shabbat? I assume it is forbidden to eat from dishes prepared for Shabbat before Shabbat (other than tasting), but perhaps it is permitted under some circumstances?