We were married in Oct 2010 and in some recent organizing we came around a card with a decent amount check from DH's 2nd cousins who were invited to the wedding but didn't come.
Do we send a thank you now and also say we're sorry for the inconvience to give a heads up that we'll cash the check (we haven't yet)?
DH isn't really close with them at all (MIL insisted we invite them)
ETA: ALthough it'd be nice to get the money fromt he check, we're really not concerned about that, plus it'd be obvious that we didn't cash it. But we don't want to be rude and not thank them for the gesture.