Couple questions for you knotties on how to handle these gift situations. 
1. We got a notice from our Macy's registry that some of our crystal glasses have been purchased but are on back order and won't arrive until for 4-5 weeks. Should we for ahead and send them a TY note, mentioning that the items will arrive next month and we look forward to using them? Or do we wait until we get them? I feel weird waiting since all our other TY notes from our wedding last week are already done. 
2. We went to exchange an item yesterday and the registry ladies gave us a printout that shows who bought us gifts. One of our friends purchased a set of drinking glasses but at the wedding we got a card from her. If she changed her mind or something that's totally fine, but I'm also worried now that her gift got misplaced. Would it be ok to send her a note thanking her for the sweet card? Or is that something I should mention in person next time I see her, that we really appreciated her card?