My grandmother and my aunt are planning an engagement party for my fi and I . Nothing fancy, we rented an area site and are having a cookout in the park, since my fi and i are not extremely fancy at all. She insists, that the invites be sent out as soon as April for a June 11th, e-party. I was thinking the first week in May would be okay, with the first week in June as an RSVP so that theres a week to buy enough food and such. how far in advance shoud engagement party invitations be sent?