Group photo! That's one thing that my Mom wanted above all else, and she got it. Except that my brother refused to smile in every single photo. Two years old? Nope-- 38!
A caution, though. Have options ready and discuss with your SILs as soon as possible. I cannot go into it without becoming extremely angry, but my relationships with my sister and brothers will never be the same after M & D's 50th Anniversary experience. It happened over 4 months ago and I still fume a bit... okay, a lot...
Can't you just eat what I put in front of you? Do you have to know what it is?
Ria Parkinson, Butterflies (BBC, 1978-83)