I've ordered the invites and enclosure cards. Now I need the RSVPs. Is it appropriate to have people indicate how many people will be attending. I am inviting a few families like 2 parents and their 2 over 18 children and one under 18 child. It would totally help with the number of meals needed. Also, how long before the wedding should I say RSVPs are due by. Need number of meals 2 weeks b/4. So I was thinking of making them due 3 weeks before so I can call people who I did not hear from.