My Dad is hosting a laid back BBQ engagement party for us and we didn't mention anything about gifts on the invitations. We certainly don't want anyone to get us anything for the engagement party- we just want people to come celebrate with us... we thought it was unnecessary to put 'no gifts please' on the invitation, but we have had a few RSVPs with inquiries about where we are registered or what we need or want. the party is this weekend- what is the best etiquette for letting people know that there is no need for gift giving at this event???