Your guests know who you are. they really really do. They don’t need signage and reminders.
If you are opting for monogrammed napkins, it’s because you would have them at home as a memory ; but you are not going to make 600, thats too much. monogrammed-this and monogrammed-that is ridiculous, choose one or maximum 2 areas to add your initials… maybe the invite, and maybe the chocolates.. and thats it!