LO is turning two this year and this is the second year I've had to change her party. But my MIL was told that she had to work and is really upset that she would miss the party. So far, the people I've asked can still come. Would you move it back a week? Also, does anyone have any tips on opening and resealing envelopes? I have all of the invitations sealed in envelopes and addressed and I would obviously have to change them.