Activity for Lisa

We are getting married in August of this year and have about 1/2 of our guests coming from out of state. I really want to get a headcount so I can finish planning the number of tables, my seating arrangements, number of table flower centerpieces,...

We are in the process of designing our wedding invitations and I read somewhere that it is 'tacky' to write on the invitation 'no gifts required'. What is the proper etiquette when it comes to that? Should I put that on the invitation somewhere, or...